Review by Headfonia.com
Today, we review the $349 USD Questyle M18i USB DAC/AMP dongle with Bluetooth.
Today, we review the $349 USD Questyle M18i USB DAC/AMP dongle with Bluetooth.
QuestyleWith over 10 years of experience in the audio field, Questyle has been focused on the research, design, and development of high-performance audio equipment. They’ve built a solid reputation through both desktop and mobile products and have released several award-winning devices over the years.
My experience with Questyle dates back to 2015. They had just released a portable player called the QP1, and I was genuinely impressed with its performance at the time. More recently, their portable DAC/AMPs have started gaining more recognition globally, and I’ve noticed a rise in popularity within the audiophile community.
The last review I did for a Questyle product was the M15 in 2022. That model was eventually followed by the M15i, which became their most well-received dongle to date, at least as far as I know. If you’re curious, their entire product line-up is available on their English website and official shop.
Questyle M18iAs of writing this review, the portable series includes four current models: the M12i, M15i, M18i, and the CMA18P. The M18i brings Bluetooth functionality from the flagship CMA18P into the M-series, and for the first time in this line-up, Questyle has integrated a battery into the design.
For the M18i, Questyle used dual ESS ES9219Q DAC chips in a dual-mono setup. They paired these with four SiP modules built on their patented Current Mode Amplificationtechnology. The internal structure follows what they call TTA, or Three-Tier Architecture, which consists of a dedicated DAC stage, a preamp section, and a separate output stage.
By separating the DAC, preamp, and HP amplification stages, Questyle aims to achieve tighter control over the signal. The four SiP modules are responsible for the current-mode amplification and are positioned to handle both positive and negative phases of each channel independently. In theory, this improves overall performance, especially for balanced output.
If you look at the signal flow diagram, it becomes clear why Questyle chose this layout/arch.
The M18i is clearly built as a balanced-first device, as Questyle doesn’t even provide detailed power specs for the unbalanced side. Personally, I switched to 4.4 mm a couple of years ago, and the M18i delivers a solid amount of power through its balanced output. The 3.5 mm single-ended port is still there for convenience, but it’s definitely not the focus.
Gain is adjustable, and in high-gain mode, the 4.4 mm output delivers 260 mW into 32 ohms and 28 mW into 300 ohms.
M18i is also the first M-series dongle with a built-in battery. In mobile or Bluetooth mode, it runs entirely off its own power instead of drawing from the connected source. The battery is relatively small at 500mAh, offering around 2 to 3 hours of use before depletion. I was honestly blindsided by this design choice, especially considering the device supports LDAC and delivers excellent Bluetooth performance.
In PC mode, the M18i powers itself and charges the battery at the same time, using a dynamic power management system that adapts in real-time to USB current limits and system load.
The M18i is priced at $399 USD, but it’s available for $349 through Questyle’s online store as an introductory offer. The drivers can be found here.
Accessories & PackagingThe M18i comes in a compact drawer-style box that I found quite chic. The packaging is simple but well thought out; you pull on the fabric tab, and the inner tray slides out, revealing the device, some documentation, a USB-C to USB-C cable, and a USB-A to USB-C adapter. Unfortunately, there’s no Lightning cable in the box.
Given the asking price, the accessory set feels a little light. At the very least, a leather case could have been bundled in. Instead, it’s sold separately for 29 USD. The USB-C cable is well-built with a fabric sheath and solid connectors, but it’s a bit stiff and not the most practical for portable use. Overall, the accessories fall short of expectations, especially considering the premium pricing.
Design & Build QualityThe Questyle M18i follows the established design language and form factor of the company’s M-series dongle DAC/AMPs. The first thing that stands out is its matte black chassis, CNC-machined from tempered aluminum. The front features a tempered glass panel that protects a compact OLED screen, while the back has a clean finish with a Questyle logo.
All control buttons are positioned along one side of the device; certification markings like CE are printed on the opposite panel, where you’ll also find the power delivery port. Speaking of ports, the M18i includes two USB-C inputs: one is strictly for data transmission, while the other handles both data and power. This setup offers flexible connectivity depending on your use case.
The buttons themselves are accentuated with chrome borders, giving the device a more refined look. Tactile feedback is excellent; each button press feels deliberate and precise. From left to right, the controls include a physical mode selector switch, a multifunction gain button, volume down, volume up, and the power button. A single press powers the device on, and pressing it again dims the screen.
You need to press and hold for 3 to 4 seconds, then release to power off the device. If you hold it for more than 10 seconds, it triggers a factory reset instead.
The headphone outputs are located on the end opposite the USB-C connectors. Both the 3.5 mm and 4.4 mm ports are gold-plated for better conductivity and long-term durability.
I really like the M18i’s matte black surface; it has a smooth, electroplated feel that stands out among its dongle peers. It feels premium in the hand, doesn’t attract fingerprints, and has a silky smooth finish that’s surprisingly rare among portable DACs, which usually have more textured or grippy finishes.
ExperienceOverall, the M18i is an easy-to-use device with a straightforward layout. It doesn’t come with parametric EQ, app integration, or any additional tuning features; this is a plug-and-play dongle in the simplest sense. I appreciate the inclusion of a physical mode selector as switching between modes is quick and doesn’t require diving into menus or dealing with software. It just works.
In Mobile Mode, the M18i runs entirely on its internal battery without drawing power from your phone or tablet, which is for preserving your phone’s battery. That said, with only a 500mAh capacity, you’re looking at around 2 to 2.5 hours of runtime before needing a recharge. I personally use it with an Anker Nano power bank, but that adds bulk.
Honestly, I see this battery more as a backup than a core feature.
My use case is specific; I’ve been using the M18i mainly in a desktop setup, connecting it to my Adam Audio D3V monitors via a 4.4 mm to dual TRS cable. In Bluetooth mode, it effectively gives my speakers solid wireless connectivity capability. Since it’s always plugged in via the side-mounted USB-C power input, battery life isn’t something I worry about.
That’s me, though; if you’re considering using it wirelessly on the go, the battery won’t satisfy you. It’s more of a fallback than a daily driver in that scenario.
PC Mode is the only mode where the M18i draws power directly from the USB host. It also charges the internal battery at the same time. There’s a smart power management system that dynamically balances the charging current and performance based on what the USB port can deliver and what the device is doing. In practice, it works seamlessly.
What stands out is how stable and capable the LDAC Bluetooth performance is. The connection holds steady, the range is excellent, and it can stream 990 kbps stably. That’s why it’s so puzzling that Questyle went with such a small battery. With Bluetooth performance this solid, the M18i could’ve been a far more compelling portable solution if it had more runtime.
Bluetooth controls are simple. Holding down the MFB button puts the device into pairing mode. While music is playing, a single press pauses or resumes playback, and a double press skips to the next track. For calls, the M18i uses an Infineon-branded microphone located next to the power button.
Pressing the MFB once answers a call, pressing twice rejects it, and a single press during a call ends it. The call quality is surprisingly nice, too.
Questyle M18i – Sound ImpressionsThe M18i has a warm-neutral signature with noticeable elevation at both ends: bass and treble. The sound is exciting and vivid; it captures the listener with an excellent amount of detail, a great punch, and impressive dynamism. Its presentation leans slightly forward; vocals, in particular, come across with a sense of intimacy that can feel a bit much depending on the recording.
That said, it remains engaging and dynamic across a wide range of genres and pairs well with nearly everything I threw at it, including the Symphonium Crimson, Sennheiser IE 600, and 64Audio Volür.
The M18i’s soundstage is not the widest, but its depth is impressive, and its imaging is quite good. You get a good sense of what is where, and instruments have adequate air between them, so it does not really feel claustrophobic. Wired mode brings out the best technical performance, but even in Bluetooth, it manages to maintain its character with minimal compromise.
The main drawback is the battery; the restrictive runtime limits how practical wireless listening can be on the go.
Tonally, the M18i impressed me a lot. The M15 had the same kind of warm “sauce” if you will, but lacked detail and proper top-end extension. Now, M18i is an entirely different case; it is clean on top, it is full-bodied, and it has an excellent extension on both ends of the spectrum. It also doesn’t drift into overly warm territory, so it really is an impressive device, sound-wise.
The upper mids have a peculiar bite, and the slight upper treble elevation adds clarity and air, helping it avoid being labeled a smoothed-out dongle. The result is a signature that feels vivid and dynamic.
vs. DC07 ProThe DC07 Pro ($199 USD) still holds its ground as one of the best dongles in the sub-$200 range, and for good reason. It’s neutral, clean, and impressively detailed, with a tuning that feels like a mini DX180. The DC07 Pro features a balanced signature with a slightly elevated sub-bass and a leaner mid-bass.
In comparison, the M18i immediately feels more dynamic with an even bigger sub-bass, rounder mid-bass, and a slightly cleaner upper midrange with similar energy. Its upper treble feels slightly more refined, too. The imaging is as accurate as the DC07 Pro. While the DC07 Pro has the upper hand when it comes to air and stage width, the impressively deep stage and slightly warmer, more natural tonality quickly stole my heart.
The only issue is the price difference.
vs. iBasso Nunchaku The Questyle M18i is an interesting rival to the Nunchaku ($299 USD), using current-mode amplification with dual ESS ES9219Q DACs, and a bold, warmer timbre that makes it more unique among its equivalents. The M18i also impresses with its upper-register clarity, offering better treble bite, resolution, and expansiveness compared to the Nunchaku.
However, the Nunchaku, particularly in NOS + Tube mode, takes the edge when it comes to depth and stage width. The midrange of the Nunchaku is slightly recessed compared to the M18i, enhancing the perception of depth and spaciousness, whereas the M18i sounds more forward and more intimate.
While the M18i’s upper frequencies sound cleaner and more detailed, the Nunchaku counters with a richer, more textured bass and an overall more immersive analog timbre.
ConclusionThe Questyle M18i is one of the most unique and sonically engaging dongles I’ve tested in the last couple of years. However, it also comes with some compromises. If you’re someone who listens mainly in a desktop setting and primarily uses 4.4 mm, the M18i offers a rich, emotive sound signature that sets it apart from the competition.
In the end, the M18i is a focused device. It’s for those who care more about sound than features; who don’t mind being tethered to a power source if it means getting a more dynamic and emotionally engaging listening experience. If that aligns with your priorities, the M18i won’t disappoint. If you need longer runtime, better portability, or software-based flexibility, there are better choices in the same price range.
SummaryPros:
+ Excellent dynamism
+ Impressive depth
+ Exciting & engaging signature
+ Very good build quality
Cons:
– Weak battery life
– Feature-light
– Price
Check Out the Original Review: Questyle M18i Review
Last edited:
Users who are viewing this thread
My experience with Questyle dates back to 2015. They had just released a portable player called the QP1, and I was genuinely impressed with its performance at the time. More recently, their portable DAC/AMPs have started gaining more recognition globally, and I’ve noticed a rise in popularity within the audiophile community.
The last review I did for a Questyle product was the M15 in 2022. That model was eventually followed by the M15i, which became their most well-received dongle to date, at least as far as I know. If you’re curious, their entire product line-up is available on their English website and official shop.
Questyle M18iAs of writing this review, the portable series includes four current models: the M12i, M15i, M18i, and the CMA18P. The M18i brings Bluetooth functionality from the flagship CMA18P into the M-series, and for the first time in this line-up, Questyle has integrated a battery into the design.
For the M18i, Questyle used dual ESS ES9219Q DAC chips in a dual-mono setup. They paired these with four SiP modules built on their patented Current Mode Amplificationtechnology. The internal structure follows what they call TTA, or Three-Tier Architecture, which consists of a dedicated DAC stage, a preamp section, and a separate output stage.
By separating the DAC, preamp, and HP amplification stages, Questyle aims to achieve tighter control over the signal. The four SiP modules are responsible for the current-mode amplification and are positioned to handle both positive and negative phases of each channel independently. In theory, this improves overall performance, especially for balanced output.
If you look at the signal flow diagram, it becomes clear why Questyle chose this layout/arch.
The M18i is clearly built as a balanced-first device, as Questyle doesn’t even provide detailed power specs for the unbalanced side. Personally, I switched to 4.4 mm a couple of years ago, and the M18i delivers a solid amount of power through its balanced output. The 3.5 mm single-ended port is still there for convenience, but it’s definitely not the focus.
Gain is adjustable, and in high-gain mode, the 4.4 mm output delivers 260 mW into 32 ohms and 28 mW into 300 ohms.
M18i is also the first M-series dongle with a built-in battery. In mobile or Bluetooth mode, it runs entirely off its own power instead of drawing from the connected source. The battery is relatively small at 500mAh, offering around 2 to 3 hours of use before depletion. I was honestly blindsided by this design choice, especially considering the device supports LDAC and delivers excellent Bluetooth performance.
In PC mode, the M18i powers itself and charges the battery at the same time, using a dynamic power management system that adapts in real-time to USB current limits and system load.
The M18i is priced at $399 USD, but it’s available for $349 through Questyle’s online store as an introductory offer. The drivers can be found here.
Accessories & PackagingThe M18i comes in a compact drawer-style box that I found quite chic. The packaging is simple but well thought out; you pull on the fabric tab, and the inner tray slides out, revealing the device, some documentation, a USB-C to USB-C cable, and a USB-A to USB-C adapter. Unfortunately, there’s no Lightning cable in the box.
Given the asking price, the accessory set feels a little light. At the very least, a leather case could have been bundled in. Instead, it’s sold separately for 29 USD. The USB-C cable is well-built with a fabric sheath and solid connectors, but it’s a bit stiff and not the most practical for portable use. Overall, the accessories fall short of expectations, especially considering the premium pricing.
Design & Build QualityThe Questyle M18i follows the established design language and form factor of the company’s M-series dongle DAC/AMPs. The first thing that stands out is its matte black chassis, CNC-machined from tempered aluminum. The front features a tempered glass panel that protects a compact OLED screen, while the back has a clean finish with a Questyle logo.
All control buttons are positioned along one side of the device; certification markings like CE are printed on the opposite panel, where you’ll also find the power delivery port. Speaking of ports, the M18i includes two USB-C inputs: one is strictly for data transmission, while the other handles both data and power. This setup offers flexible connectivity depending on your use case.
The buttons themselves are accentuated with chrome borders, giving the device a more refined look. Tactile feedback is excellent; each button press feels deliberate and precise. From left to right, the controls include a physical mode selector switch, a multifunction gain button, volume down, volume up, and the power button. A single press powers the device on, and pressing it again dims the screen.
You need to press and hold for 3 to 4 seconds, then release to power off the device. If you hold it for more than 10 seconds, it triggers a factory reset instead.
The headphone outputs are located on the end opposite the USB-C connectors. Both the 3.5 mm and 4.4 mm ports are gold-plated for better conductivity and long-term durability.
I really like the M18i’s matte black surface; it has a smooth, electroplated feel that stands out among its dongle peers. It feels premium in the hand, doesn’t attract fingerprints, and has a silky smooth finish that’s surprisingly rare among portable DACs, which usually have more textured or grippy finishes.
ExperienceOverall, the M18i is an easy-to-use device with a straightforward layout. It doesn’t come with parametric EQ, app integration, or any additional tuning features; this is a plug-and-play dongle in the simplest sense. I appreciate the inclusion of a physical mode selector as switching between modes is quick and doesn’t require diving into menus or dealing with software. It just works.
In Mobile Mode, the M18i runs entirely on its internal battery without drawing power from your phone or tablet, which is for preserving your phone’s battery. That said, with only a 500mAh capacity, you’re looking at around 2 to 2.5 hours of runtime before needing a recharge. I personally use it with an Anker Nano power bank, but that adds bulk.
Honestly, I see this battery more as a backup than a core feature.
My use case is specific; I’ve been using the M18i mainly in a desktop setup, connecting it to my Adam Audio D3V monitors via a 4.4 mm to dual TRS cable. In Bluetooth mode, it effectively gives my speakers solid wireless connectivity capability. Since it’s always plugged in via the side-mounted USB-C power input, battery life isn’t something I worry about.
That’s me, though; if you’re considering using it wirelessly on the go, the battery won’t satisfy you. It’s more of a fallback than a daily driver in that scenario.
PC Mode is the only mode where the M18i draws power directly from the USB host. It also charges the internal battery at the same time. There’s a smart power management system that dynamically balances the charging current and performance based on what the USB port can deliver and what the device is doing. In practice, it works seamlessly.
What stands out is how stable and capable the LDAC Bluetooth performance is. The connection holds steady, the range is excellent, and it can stream 990 kbps stably. That’s why it’s so puzzling that Questyle went with such a small battery. With Bluetooth performance this solid, the M18i could’ve been a far more compelling portable solution if it had more runtime.
Bluetooth controls are simple. Holding down the MFB button puts the device into pairing mode. While music is playing, a single press pauses or resumes playback, and a double press skips to the next track. For calls, the M18i uses an Infineon-branded microphone located next to the power button.
Pressing the MFB once answers a call, pressing twice rejects it, and a single press during a call ends it. The call quality is surprisingly nice, too.
Questyle M18i – Sound ImpressionsThe M18i has a warm-neutral signature with noticeable elevation at both ends: bass and treble. The sound is exciting and vivid; it captures the listener with an excellent amount of detail, a great punch, and impressive dynamism. Its presentation leans slightly forward; vocals, in particular, come across with a sense of intimacy that can feel a bit much depending on the recording.
That said, it remains engaging and dynamic across a wide range of genres and pairs well with nearly everything I threw at it, including the Symphonium Crimson, Sennheiser IE 600, and 64Audio Volür.
The M18i’s soundstage is not the widest, but its depth is impressive, and its imaging is quite good. You get a good sense of what is where, and instruments have adequate air between them, so it does not really feel claustrophobic. Wired mode brings out the best technical performance, but even in Bluetooth, it manages to maintain its character with minimal compromise.
The main drawback is the battery; the restrictive runtime limits how practical wireless listening can be on the go.
Tonally, the M18i impressed me a lot. The M15 had the same kind of warm “sauce” if you will, but lacked detail and proper top-end extension. Now, M18i is an entirely different case; it is clean on top, it is full-bodied, and it has an excellent extension on both ends of the spectrum. It also doesn’t drift into overly warm territory, so it really is an impressive device, sound-wise.
The upper mids have a peculiar bite, and the slight upper treble elevation adds clarity and air, helping it avoid being labeled a smoothed-out dongle. The result is a signature that feels vivid and dynamic.
vs. DC07 ProThe DC07 Pro ($199 USD) still holds its ground as one of the best dongles in the sub-$200 range, and for good reason. It’s neutral, clean, and impressively detailed, with a tuning that feels like a mini DX180. The DC07 Pro features a balanced signature with a slightly elevated sub-bass and a leaner mid-bass.
In comparison, the M18i immediately feels more dynamic with an even bigger sub-bass, rounder mid-bass, and a slightly cleaner upper midrange with similar energy. Its upper treble feels slightly more refined, too. The imaging is as accurate as the DC07 Pro. While the DC07 Pro has the upper hand when it comes to air and stage width, the impressively deep stage and slightly warmer, more natural tonality quickly stole my heart.
The only issue is the price difference.
vs. iBasso Nunchaku The Questyle M18i is an interesting rival to the Nunchaku ($299 USD), using current-mode amplification with dual ESS ES9219Q DACs, and a bold, warmer timbre that makes it more unique among its equivalents. The M18i also impresses with its upper-register clarity, offering better treble bite, resolution, and expansiveness compared to the Nunchaku.
However, the Nunchaku, particularly in NOS + Tube mode, takes the edge when it comes to depth and stage width. The midrange of the Nunchaku is slightly recessed compared to the M18i, enhancing the perception of depth and spaciousness, whereas the M18i sounds more forward and more intimate.
While the M18i’s upper frequencies sound cleaner and more detailed, the Nunchaku counters with a richer, more textured bass and an overall more immersive analog timbre.
ConclusionThe Questyle M18i is one of the most unique and sonically engaging dongles I’ve tested in the last couple of years. However, it also comes with some compromises. If you’re someone who listens mainly in a desktop setting and primarily uses 4.4 mm, the M18i offers a rich, emotive sound signature that sets it apart from the competition.
In the end, the M18i is a focused device. It’s for those who care more about sound than features; who don’t mind being tethered to a power source if it means getting a more dynamic and emotionally engaging listening experience. If that aligns with your priorities, the M18i won’t disappoint. If you need longer runtime, better portability, or software-based flexibility, there are better choices in the same price range.
SummaryPros:
+ Excellent dynamism
+ Impressive depth
+ Exciting & engaging signature
+ Very good build quality
Cons:
– Weak battery life
– Feature-light
– Price
Check Out the Original Review: Questyle M18i Review
Last edited:
For the M18i, Questyle used dual ESS ES9219Q DAC chips in a dual-mono setup. They paired these with four SiP modules built on their patented Current Mode Amplificationtechnology. The internal structure follows what they call TTA, or Three-Tier Architecture, which consists of a dedicated DAC stage, a preamp section, and a separate output stage.
By separating the DAC, preamp, and HP amplification stages, Questyle aims to achieve tighter control over the signal. The four SiP modules are responsible for the current-mode amplification and are positioned to handle both positive and negative phases of each channel independently. In theory, this improves overall performance, especially for balanced output.
If you look at the signal flow diagram, it becomes clear why Questyle chose this layout/arch.
The M18i is clearly built as a balanced-first device, as Questyle doesn’t even provide detailed power specs for the unbalanced side. Personally, I switched to 4.4 mm a couple of years ago, and the M18i delivers a solid amount of power through its balanced output. The 3.5 mm single-ended port is still there for convenience, but it’s definitely not the focus.
Gain is adjustable, and in high-gain mode, the 4.4 mm output delivers 260 mW into 32 ohms and 28 mW into 300 ohms.
M18i is also the first M-series dongle with a built-in battery. In mobile or Bluetooth mode, it runs entirely off its own power instead of drawing from the connected source. The battery is relatively small at 500mAh, offering around 2 to 3 hours of use before depletion. I was honestly blindsided by this design choice, especially considering the device supports LDAC and delivers excellent Bluetooth performance.
In PC mode, the M18i powers itself and charges the battery at the same time, using a dynamic power management system that adapts in real-time to USB current limits and system load.
The M18i is priced at $399 USD, but it’s available for $349 through Questyle’s online store as an introductory offer. The drivers can be found here.
Accessories & PackagingThe M18i comes in a compact drawer-style box that I found quite chic. The packaging is simple but well thought out; you pull on the fabric tab, and the inner tray slides out, revealing the device, some documentation, a USB-C to USB-C cable, and a USB-A to USB-C adapter. Unfortunately, there’s no Lightning cable in the box.
Given the asking price, the accessory set feels a little light. At the very least, a leather case could have been bundled in. Instead, it’s sold separately for 29 USD. The USB-C cable is well-built with a fabric sheath and solid connectors, but it’s a bit stiff and not the most practical for portable use. Overall, the accessories fall short of expectations, especially considering the premium pricing.
Design & Build QualityThe Questyle M18i follows the established design language and form factor of the company’s M-series dongle DAC/AMPs. The first thing that stands out is its matte black chassis, CNC-machined from tempered aluminum. The front features a tempered glass panel that protects a compact OLED screen, while the back has a clean finish with a Questyle logo.
All control buttons are positioned along one side of the device; certification markings like CE are printed on the opposite panel, where you’ll also find the power delivery port. Speaking of ports, the M18i includes two USB-C inputs: one is strictly for data transmission, while the other handles both data and power. This setup offers flexible connectivity depending on your use case.
The buttons themselves are accentuated with chrome borders, giving the device a more refined look. Tactile feedback is excellent; each button press feels deliberate and precise. From left to right, the controls include a physical mode selector switch, a multifunction gain button, volume down, volume up, and the power button. A single press powers the device on, and pressing it again dims the screen.
You need to press and hold for 3 to 4 seconds, then release to power off the device. If you hold it for more than 10 seconds, it triggers a factory reset instead.
The headphone outputs are located on the end opposite the USB-C connectors. Both the 3.5 mm and 4.4 mm ports are gold-plated for better conductivity and long-term durability.
I really like the M18i’s matte black surface; it has a smooth, electroplated feel that stands out among its dongle peers. It feels premium in the hand, doesn’t attract fingerprints, and has a silky smooth finish that’s surprisingly rare among portable DACs, which usually have more textured or grippy finishes.
ExperienceOverall, the M18i is an easy-to-use device with a straightforward layout. It doesn’t come with parametric EQ, app integration, or any additional tuning features; this is a plug-and-play dongle in the simplest sense. I appreciate the inclusion of a physical mode selector as switching between modes is quick and doesn’t require diving into menus or dealing with software. It just works.
In Mobile Mode, the M18i runs entirely on its internal battery without drawing power from your phone or tablet, which is for preserving your phone’s battery. That said, with only a 500mAh capacity, you’re looking at around 2 to 2.5 hours of runtime before needing a recharge. I personally use it with an Anker Nano power bank, but that adds bulk.
Honestly, I see this battery more as a backup than a core feature.
My use case is specific; I’ve been using the M18i mainly in a desktop setup, connecting it to my Adam Audio D3V monitors via a 4.4 mm to dual TRS cable. In Bluetooth mode, it effectively gives my speakers solid wireless connectivity capability. Since it’s always plugged in via the side-mounted USB-C power input, battery life isn’t something I worry about.
That’s me, though; if you’re considering using it wirelessly on the go, the battery won’t satisfy you. It’s more of a fallback than a daily driver in that scenario.
PC Mode is the only mode where the M18i draws power directly from the USB host. It also charges the internal battery at the same time. There’s a smart power management system that dynamically balances the charging current and performance based on what the USB port can deliver and what the device is doing. In practice, it works seamlessly.
What stands out is how stable and capable the LDAC Bluetooth performance is. The connection holds steady, the range is excellent, and it can stream 990 kbps stably. That’s why it’s so puzzling that Questyle went with such a small battery. With Bluetooth performance this solid, the M18i could’ve been a far more compelling portable solution if it had more runtime.
Bluetooth controls are simple. Holding down the MFB button puts the device into pairing mode. While music is playing, a single press pauses or resumes playback, and a double press skips to the next track. For calls, the M18i uses an Infineon-branded microphone located next to the power button.
Pressing the MFB once answers a call, pressing twice rejects it, and a single press during a call ends it. The call quality is surprisingly nice, too.
Questyle M18i – Sound ImpressionsThe M18i has a warm-neutral signature with noticeable elevation at both ends: bass and treble. The sound is exciting and vivid; it captures the listener with an excellent amount of detail, a great punch, and impressive dynamism. Its presentation leans slightly forward; vocals, in particular, come across with a sense of intimacy that can feel a bit much depending on the recording.
That said, it remains engaging and dynamic across a wide range of genres and pairs well with nearly everything I threw at it, including the Symphonium Crimson, Sennheiser IE 600, and 64Audio Volür.
The M18i’s soundstage is not the widest, but its depth is impressive, and its imaging is quite good. You get a good sense of what is where, and instruments have adequate air between them, so it does not really feel claustrophobic. Wired mode brings out the best technical performance, but even in Bluetooth, it manages to maintain its character with minimal compromise.
The main drawback is the battery; the restrictive runtime limits how practical wireless listening can be on the go.
Tonally, the M18i impressed me a lot. The M15 had the same kind of warm “sauce” if you will, but lacked detail and proper top-end extension. Now, M18i is an entirely different case; it is clean on top, it is full-bodied, and it has an excellent extension on both ends of the spectrum. It also doesn’t drift into overly warm territory, so it really is an impressive device, sound-wise.
The upper mids have a peculiar bite, and the slight upper treble elevation adds clarity and air, helping it avoid being labeled a smoothed-out dongle. The result is a signature that feels vivid and dynamic.
vs. DC07 ProThe DC07 Pro ($199 USD) still holds its ground as one of the best dongles in the sub-$200 range, and for good reason. It’s neutral, clean, and impressively detailed, with a tuning that feels like a mini DX180. The DC07 Pro features a balanced signature with a slightly elevated sub-bass and a leaner mid-bass.
In comparison, the M18i immediately feels more dynamic with an even bigger sub-bass, rounder mid-bass, and a slightly cleaner upper midrange with similar energy. Its upper treble feels slightly more refined, too. The imaging is as accurate as the DC07 Pro. While the DC07 Pro has the upper hand when it comes to air and stage width, the impressively deep stage and slightly warmer, more natural tonality quickly stole my heart.
The only issue is the price difference.
vs. iBasso Nunchaku The Questyle M18i is an interesting rival to the Nunchaku ($299 USD), using current-mode amplification with dual ESS ES9219Q DACs, and a bold, warmer timbre that makes it more unique among its equivalents. The M18i also impresses with its upper-register clarity, offering better treble bite, resolution, and expansiveness compared to the Nunchaku.
However, the Nunchaku, particularly in NOS + Tube mode, takes the edge when it comes to depth and stage width. The midrange of the Nunchaku is slightly recessed compared to the M18i, enhancing the perception of depth and spaciousness, whereas the M18i sounds more forward and more intimate.
While the M18i’s upper frequencies sound cleaner and more detailed, the Nunchaku counters with a richer, more textured bass and an overall more immersive analog timbre.
ConclusionThe Questyle M18i is one of the most unique and sonically engaging dongles I’ve tested in the last couple of years. However, it also comes with some compromises. If you’re someone who listens mainly in a desktop setting and primarily uses 4.4 mm, the M18i offers a rich, emotive sound signature that sets it apart from the competition.
In the end, the M18i is a focused device. It’s for those who care more about sound than features; who don’t mind being tethered to a power source if it means getting a more dynamic and emotionally engaging listening experience. If that aligns with your priorities, the M18i won’t disappoint. If you need longer runtime, better portability, or software-based flexibility, there are better choices in the same price range.
SummaryPros:
+ Excellent dynamism
+ Impressive depth
+ Exciting & engaging signature
+ Very good build quality
Cons:
– Weak battery life
– Feature-light
– Price
Check Out the Original Review: Questyle M18i Review
Last edited:
Given the asking price, the accessory set feels a little light. At the very least, a leather case could have been bundled in. Instead, it’s sold separately for 29 USD. The USB-C cable is well-built with a fabric sheath and solid connectors, but it’s a bit stiff and not the most practical for portable use. Overall, the accessories fall short of expectations, especially considering the premium pricing.
Design & Build QualityThe Questyle M18i follows the established design language and form factor of the company’s M-series dongle DAC/AMPs. The first thing that stands out is its matte black chassis, CNC-machined from tempered aluminum. The front features a tempered glass panel that protects a compact OLED screen, while the back has a clean finish with a Questyle logo.
All control buttons are positioned along one side of the device; certification markings like CE are printed on the opposite panel, where you’ll also find the power delivery port. Speaking of ports, the M18i includes two USB-C inputs: one is strictly for data transmission, while the other handles both data and power. This setup offers flexible connectivity depending on your use case.
The buttons themselves are accentuated with chrome borders, giving the device a more refined look. Tactile feedback is excellent; each button press feels deliberate and precise. From left to right, the controls include a physical mode selector switch, a multifunction gain button, volume down, volume up, and the power button. A single press powers the device on, and pressing it again dims the screen.
You need to press and hold for 3 to 4 seconds, then release to power off the device. If you hold it for more than 10 seconds, it triggers a factory reset instead.
The headphone outputs are located on the end opposite the USB-C connectors. Both the 3.5 mm and 4.4 mm ports are gold-plated for better conductivity and long-term durability.
I really like the M18i’s matte black surface; it has a smooth, electroplated feel that stands out among its dongle peers. It feels premium in the hand, doesn’t attract fingerprints, and has a silky smooth finish that’s surprisingly rare among portable DACs, which usually have more textured or grippy finishes.
ExperienceOverall, the M18i is an easy-to-use device with a straightforward layout. It doesn’t come with parametric EQ, app integration, or any additional tuning features; this is a plug-and-play dongle in the simplest sense. I appreciate the inclusion of a physical mode selector as switching between modes is quick and doesn’t require diving into menus or dealing with software. It just works.
In Mobile Mode, the M18i runs entirely on its internal battery without drawing power from your phone or tablet, which is for preserving your phone’s battery. That said, with only a 500mAh capacity, you’re looking at around 2 to 2.5 hours of runtime before needing a recharge. I personally use it with an Anker Nano power bank, but that adds bulk.
Honestly, I see this battery more as a backup than a core feature.
My use case is specific; I’ve been using the M18i mainly in a desktop setup, connecting it to my Adam Audio D3V monitors via a 4.4 mm to dual TRS cable. In Bluetooth mode, it effectively gives my speakers solid wireless connectivity capability. Since it’s always plugged in via the side-mounted USB-C power input, battery life isn’t something I worry about.
That’s me, though; if you’re considering using it wirelessly on the go, the battery won’t satisfy you. It’s more of a fallback than a daily driver in that scenario.
PC Mode is the only mode where the M18i draws power directly from the USB host. It also charges the internal battery at the same time. There’s a smart power management system that dynamically balances the charging current and performance based on what the USB port can deliver and what the device is doing. In practice, it works seamlessly.
What stands out is how stable and capable the LDAC Bluetooth performance is. The connection holds steady, the range is excellent, and it can stream 990 kbps stably. That’s why it’s so puzzling that Questyle went with such a small battery. With Bluetooth performance this solid, the M18i could’ve been a far more compelling portable solution if it had more runtime.
Bluetooth controls are simple. Holding down the MFB button puts the device into pairing mode. While music is playing, a single press pauses or resumes playback, and a double press skips to the next track. For calls, the M18i uses an Infineon-branded microphone located next to the power button.
Pressing the MFB once answers a call, pressing twice rejects it, and a single press during a call ends it. The call quality is surprisingly nice, too.
Questyle M18i – Sound ImpressionsThe M18i has a warm-neutral signature with noticeable elevation at both ends: bass and treble. The sound is exciting and vivid; it captures the listener with an excellent amount of detail, a great punch, and impressive dynamism. Its presentation leans slightly forward; vocals, in particular, come across with a sense of intimacy that can feel a bit much depending on the recording.
That said, it remains engaging and dynamic across a wide range of genres and pairs well with nearly everything I threw at it, including the Symphonium Crimson, Sennheiser IE 600, and 64Audio Volür.
The M18i’s soundstage is not the widest, but its depth is impressive, and its imaging is quite good. You get a good sense of what is where, and instruments have adequate air between them, so it does not really feel claustrophobic. Wired mode brings out the best technical performance, but even in Bluetooth, it manages to maintain its character with minimal compromise.
The main drawback is the battery; the restrictive runtime limits how practical wireless listening can be on the go.
Tonally, the M18i impressed me a lot. The M15 had the same kind of warm “sauce” if you will, but lacked detail and proper top-end extension. Now, M18i is an entirely different case; it is clean on top, it is full-bodied, and it has an excellent extension on both ends of the spectrum. It also doesn’t drift into overly warm territory, so it really is an impressive device, sound-wise.
The upper mids have a peculiar bite, and the slight upper treble elevation adds clarity and air, helping it avoid being labeled a smoothed-out dongle. The result is a signature that feels vivid and dynamic.
vs. DC07 ProThe DC07 Pro ($199 USD) still holds its ground as one of the best dongles in the sub-$200 range, and for good reason. It’s neutral, clean, and impressively detailed, with a tuning that feels like a mini DX180. The DC07 Pro features a balanced signature with a slightly elevated sub-bass and a leaner mid-bass.
In comparison, the M18i immediately feels more dynamic with an even bigger sub-bass, rounder mid-bass, and a slightly cleaner upper midrange with similar energy. Its upper treble feels slightly more refined, too. The imaging is as accurate as the DC07 Pro. While the DC07 Pro has the upper hand when it comes to air and stage width, the impressively deep stage and slightly warmer, more natural tonality quickly stole my heart.
The only issue is the price difference.
vs. iBasso Nunchaku The Questyle M18i is an interesting rival to the Nunchaku ($299 USD), using current-mode amplification with dual ESS ES9219Q DACs, and a bold, warmer timbre that makes it more unique among its equivalents. The M18i also impresses with its upper-register clarity, offering better treble bite, resolution, and expansiveness compared to the Nunchaku.
However, the Nunchaku, particularly in NOS + Tube mode, takes the edge when it comes to depth and stage width. The midrange of the Nunchaku is slightly recessed compared to the M18i, enhancing the perception of depth and spaciousness, whereas the M18i sounds more forward and more intimate.
While the M18i’s upper frequencies sound cleaner and more detailed, the Nunchaku counters with a richer, more textured bass and an overall more immersive analog timbre.
ConclusionThe Questyle M18i is one of the most unique and sonically engaging dongles I’ve tested in the last couple of years. However, it also comes with some compromises. If you’re someone who listens mainly in a desktop setting and primarily uses 4.4 mm, the M18i offers a rich, emotive sound signature that sets it apart from the competition.
In the end, the M18i is a focused device. It’s for those who care more about sound than features; who don’t mind being tethered to a power source if it means getting a more dynamic and emotionally engaging listening experience. If that aligns with your priorities, the M18i won’t disappoint. If you need longer runtime, better portability, or software-based flexibility, there are better choices in the same price range.
SummaryPros:
+ Excellent dynamism
+ Impressive depth
+ Exciting & engaging signature
+ Very good build quality
Cons:
– Weak battery life
– Feature-light
– Price
Check Out the Original Review: Questyle M18i Review
Last edited:
All control buttons are positioned along one side of the device; certification markings like CE are printed on the opposite panel, where you’ll also find the power delivery port. Speaking of ports, the M18i includes two USB-C inputs: one is strictly for data transmission, while the other handles both data and power. This setup offers flexible connectivity depending on your use case.
The buttons themselves are accentuated with chrome borders, giving the device a more refined look. Tactile feedback is excellent; each button press feels deliberate and precise. From left to right, the controls include a physical mode selector switch, a multifunction gain button, volume down, volume up, and the power button. A single press powers the device on, and pressing it again dims the screen.
You need to press and hold for 3 to 4 seconds, then release to power off the device. If you hold it for more than 10 seconds, it triggers a factory reset instead.
The headphone outputs are located on the end opposite the USB-C connectors. Both the 3.5 mm and 4.4 mm ports are gold-plated for better conductivity and long-term durability.
I really like the M18i’s matte black surface; it has a smooth, electroplated feel that stands out among its dongle peers. It feels premium in the hand, doesn’t attract fingerprints, and has a silky smooth finish that’s surprisingly rare among portable DACs, which usually have more textured or grippy finishes.
ExperienceOverall, the M18i is an easy-to-use device with a straightforward layout. It doesn’t come with parametric EQ, app integration, or any additional tuning features; this is a plug-and-play dongle in the simplest sense. I appreciate the inclusion of a physical mode selector as switching between modes is quick and doesn’t require diving into menus or dealing with software. It just works.
In Mobile Mode, the M18i runs entirely on its internal battery without drawing power from your phone or tablet, which is for preserving your phone’s battery. That said, with only a 500mAh capacity, you’re looking at around 2 to 2.5 hours of runtime before needing a recharge. I personally use it with an Anker Nano power bank, but that adds bulk.
Honestly, I see this battery more as a backup than a core feature.
My use case is specific; I’ve been using the M18i mainly in a desktop setup, connecting it to my Adam Audio D3V monitors via a 4.4 mm to dual TRS cable. In Bluetooth mode, it effectively gives my speakers solid wireless connectivity capability. Since it’s always plugged in via the side-mounted USB-C power input, battery life isn’t something I worry about.
That’s me, though; if you’re considering using it wirelessly on the go, the battery won’t satisfy you. It’s more of a fallback than a daily driver in that scenario.
PC Mode is the only mode where the M18i draws power directly from the USB host. It also charges the internal battery at the same time. There’s a smart power management system that dynamically balances the charging current and performance based on what the USB port can deliver and what the device is doing. In practice, it works seamlessly.
What stands out is how stable and capable the LDAC Bluetooth performance is. The connection holds steady, the range is excellent, and it can stream 990 kbps stably. That’s why it’s so puzzling that Questyle went with such a small battery. With Bluetooth performance this solid, the M18i could’ve been a far more compelling portable solution if it had more runtime.
Bluetooth controls are simple. Holding down the MFB button puts the device into pairing mode. While music is playing, a single press pauses or resumes playback, and a double press skips to the next track. For calls, the M18i uses an Infineon-branded microphone located next to the power button.
Pressing the MFB once answers a call, pressing twice rejects it, and a single press during a call ends it. The call quality is surprisingly nice, too.
Questyle M18i – Sound ImpressionsThe M18i has a warm-neutral signature with noticeable elevation at both ends: bass and treble. The sound is exciting and vivid; it captures the listener with an excellent amount of detail, a great punch, and impressive dynamism. Its presentation leans slightly forward; vocals, in particular, come across with a sense of intimacy that can feel a bit much depending on the recording.
That said, it remains engaging and dynamic across a wide range of genres and pairs well with nearly everything I threw at it, including the Symphonium Crimson, Sennheiser IE 600, and 64Audio Volür.
The M18i’s soundstage is not the widest, but its depth is impressive, and its imaging is quite good. You get a good sense of what is where, and instruments have adequate air between them, so it does not really feel claustrophobic. Wired mode brings out the best technical performance, but even in Bluetooth, it manages to maintain its character with minimal compromise.
The main drawback is the battery; the restrictive runtime limits how practical wireless listening can be on the go.
Tonally, the M18i impressed me a lot. The M15 had the same kind of warm “sauce” if you will, but lacked detail and proper top-end extension. Now, M18i is an entirely different case; it is clean on top, it is full-bodied, and it has an excellent extension on both ends of the spectrum. It also doesn’t drift into overly warm territory, so it really is an impressive device, sound-wise.
The upper mids have a peculiar bite, and the slight upper treble elevation adds clarity and air, helping it avoid being labeled a smoothed-out dongle. The result is a signature that feels vivid and dynamic.
vs. DC07 ProThe DC07 Pro ($199 USD) still holds its ground as one of the best dongles in the sub-$200 range, and for good reason. It’s neutral, clean, and impressively detailed, with a tuning that feels like a mini DX180. The DC07 Pro features a balanced signature with a slightly elevated sub-bass and a leaner mid-bass.
In comparison, the M18i immediately feels more dynamic with an even bigger sub-bass, rounder mid-bass, and a slightly cleaner upper midrange with similar energy. Its upper treble feels slightly more refined, too. The imaging is as accurate as the DC07 Pro. While the DC07 Pro has the upper hand when it comes to air and stage width, the impressively deep stage and slightly warmer, more natural tonality quickly stole my heart.
The only issue is the price difference.
vs. iBasso Nunchaku The Questyle M18i is an interesting rival to the Nunchaku ($299 USD), using current-mode amplification with dual ESS ES9219Q DACs, and a bold, warmer timbre that makes it more unique among its equivalents. The M18i also impresses with its upper-register clarity, offering better treble bite, resolution, and expansiveness compared to the Nunchaku.
However, the Nunchaku, particularly in NOS + Tube mode, takes the edge when it comes to depth and stage width. The midrange of the Nunchaku is slightly recessed compared to the M18i, enhancing the perception of depth and spaciousness, whereas the M18i sounds more forward and more intimate.
While the M18i’s upper frequencies sound cleaner and more detailed, the Nunchaku counters with a richer, more textured bass and an overall more immersive analog timbre.
ConclusionThe Questyle M18i is one of the most unique and sonically engaging dongles I’ve tested in the last couple of years. However, it also comes with some compromises. If you’re someone who listens mainly in a desktop setting and primarily uses 4.4 mm, the M18i offers a rich, emotive sound signature that sets it apart from the competition.
In the end, the M18i is a focused device. It’s for those who care more about sound than features; who don’t mind being tethered to a power source if it means getting a more dynamic and emotionally engaging listening experience. If that aligns with your priorities, the M18i won’t disappoint. If you need longer runtime, better portability, or software-based flexibility, there are better choices in the same price range.
SummaryPros:
+ Excellent dynamism
+ Impressive depth
+ Exciting & engaging signature
+ Very good build quality
Cons:
– Weak battery life
– Feature-light
– Price
Check Out the Original Review: Questyle M18i Review
Last edited:
In Mobile Mode, the M18i runs entirely on its internal battery without drawing power from your phone or tablet, which is for preserving your phone’s battery. That said, with only a 500mAh capacity, you’re looking at around 2 to 2.5 hours of runtime before needing a recharge. I personally use it with an Anker Nano power bank, but that adds bulk.
Honestly, I see this battery more as a backup than a core feature.
My use case is specific; I’ve been using the M18i mainly in a desktop setup, connecting it to my Adam Audio D3V monitors via a 4.4 mm to dual TRS cable. In Bluetooth mode, it effectively gives my speakers solid wireless connectivity capability. Since it’s always plugged in via the side-mounted USB-C power input, battery life isn’t something I worry about.
That’s me, though; if you’re considering using it wirelessly on the go, the battery won’t satisfy you. It’s more of a fallback than a daily driver in that scenario.
PC Mode is the only mode where the M18i draws power directly from the USB host. It also charges the internal battery at the same time. There’s a smart power management system that dynamically balances the charging current and performance based on what the USB port can deliver and what the device is doing. In practice, it works seamlessly.
What stands out is how stable and capable the LDAC Bluetooth performance is. The connection holds steady, the range is excellent, and it can stream 990 kbps stably. That’s why it’s so puzzling that Questyle went with such a small battery. With Bluetooth performance this solid, the M18i could’ve been a far more compelling portable solution if it had more runtime.
Bluetooth controls are simple. Holding down the MFB button puts the device into pairing mode. While music is playing, a single press pauses or resumes playback, and a double press skips to the next track. For calls, the M18i uses an Infineon-branded microphone located next to the power button.
Pressing the MFB once answers a call, pressing twice rejects it, and a single press during a call ends it. The call quality is surprisingly nice, too.
Questyle M18i – Sound ImpressionsThe M18i has a warm-neutral signature with noticeable elevation at both ends: bass and treble. The sound is exciting and vivid; it captures the listener with an excellent amount of detail, a great punch, and impressive dynamism. Its presentation leans slightly forward; vocals, in particular, come across with a sense of intimacy that can feel a bit much depending on the recording.
That said, it remains engaging and dynamic across a wide range of genres and pairs well with nearly everything I threw at it, including the Symphonium Crimson, Sennheiser IE 600, and 64Audio Volür.
The M18i’s soundstage is not the widest, but its depth is impressive, and its imaging is quite good. You get a good sense of what is where, and instruments have adequate air between them, so it does not really feel claustrophobic. Wired mode brings out the best technical performance, but even in Bluetooth, it manages to maintain its character with minimal compromise.
The main drawback is the battery; the restrictive runtime limits how practical wireless listening can be on the go.
Tonally, the M18i impressed me a lot. The M15 had the same kind of warm “sauce” if you will, but lacked detail and proper top-end extension. Now, M18i is an entirely different case; it is clean on top, it is full-bodied, and it has an excellent extension on both ends of the spectrum. It also doesn’t drift into overly warm territory, so it really is an impressive device, sound-wise.
The upper mids have a peculiar bite, and the slight upper treble elevation adds clarity and air, helping it avoid being labeled a smoothed-out dongle. The result is a signature that feels vivid and dynamic.
vs. DC07 ProThe DC07 Pro ($199 USD) still holds its ground as one of the best dongles in the sub-$200 range, and for good reason. It’s neutral, clean, and impressively detailed, with a tuning that feels like a mini DX180. The DC07 Pro features a balanced signature with a slightly elevated sub-bass and a leaner mid-bass.
In comparison, the M18i immediately feels more dynamic with an even bigger sub-bass, rounder mid-bass, and a slightly cleaner upper midrange with similar energy. Its upper treble feels slightly more refined, too. The imaging is as accurate as the DC07 Pro. While the DC07 Pro has the upper hand when it comes to air and stage width, the impressively deep stage and slightly warmer, more natural tonality quickly stole my heart.
The only issue is the price difference.
vs. iBasso Nunchaku The Questyle M18i is an interesting rival to the Nunchaku ($299 USD), using current-mode amplification with dual ESS ES9219Q DACs, and a bold, warmer timbre that makes it more unique among its equivalents. The M18i also impresses with its upper-register clarity, offering better treble bite, resolution, and expansiveness compared to the Nunchaku.
However, the Nunchaku, particularly in NOS + Tube mode, takes the edge when it comes to depth and stage width. The midrange of the Nunchaku is slightly recessed compared to the M18i, enhancing the perception of depth and spaciousness, whereas the M18i sounds more forward and more intimate.
While the M18i’s upper frequencies sound cleaner and more detailed, the Nunchaku counters with a richer, more textured bass and an overall more immersive analog timbre.
ConclusionThe Questyle M18i is one of the most unique and sonically engaging dongles I’ve tested in the last couple of years. However, it also comes with some compromises. If you’re someone who listens mainly in a desktop setting and primarily uses 4.4 mm, the M18i offers a rich, emotive sound signature that sets it apart from the competition.
In the end, the M18i is a focused device. It’s for those who care more about sound than features; who don’t mind being tethered to a power source if it means getting a more dynamic and emotionally engaging listening experience. If that aligns with your priorities, the M18i won’t disappoint. If you need longer runtime, better portability, or software-based flexibility, there are better choices in the same price range.
SummaryPros:
+ Excellent dynamism
+ Impressive depth
+ Exciting & engaging signature
+ Very good build quality
Cons:
– Weak battery life
– Feature-light
– Price
Check Out the Original Review: Questyle M18i Review
Last edited:
That said, it remains engaging and dynamic across a wide range of genres and pairs well with nearly everything I threw at it, including the Symphonium Crimson, Sennheiser IE 600, and 64Audio Volür.
The M18i’s soundstage is not the widest, but its depth is impressive, and its imaging is quite good. You get a good sense of what is where, and instruments have adequate air between them, so it does not really feel claustrophobic. Wired mode brings out the best technical performance, but even in Bluetooth, it manages to maintain its character with minimal compromise.
The main drawback is the battery; the restrictive runtime limits how practical wireless listening can be on the go.
Tonally, the M18i impressed me a lot. The M15 had the same kind of warm “sauce” if you will, but lacked detail and proper top-end extension. Now, M18i is an entirely different case; it is clean on top, it is full-bodied, and it has an excellent extension on both ends of the spectrum. It also doesn’t drift into overly warm territory, so it really is an impressive device, sound-wise.
The upper mids have a peculiar bite, and the slight upper treble elevation adds clarity and air, helping it avoid being labeled a smoothed-out dongle. The result is a signature that feels vivid and dynamic.
vs. DC07 ProThe DC07 Pro ($199 USD) still holds its ground as one of the best dongles in the sub-$200 range, and for good reason. It’s neutral, clean, and impressively detailed, with a tuning that feels like a mini DX180. The DC07 Pro features a balanced signature with a slightly elevated sub-bass and a leaner mid-bass.
In comparison, the M18i immediately feels more dynamic with an even bigger sub-bass, rounder mid-bass, and a slightly cleaner upper midrange with similar energy. Its upper treble feels slightly more refined, too. The imaging is as accurate as the DC07 Pro. While the DC07 Pro has the upper hand when it comes to air and stage width, the impressively deep stage and slightly warmer, more natural tonality quickly stole my heart.
The only issue is the price difference.
vs. iBasso Nunchaku The Questyle M18i is an interesting rival to the Nunchaku ($299 USD), using current-mode amplification with dual ESS ES9219Q DACs, and a bold, warmer timbre that makes it more unique among its equivalents. The M18i also impresses with its upper-register clarity, offering better treble bite, resolution, and expansiveness compared to the Nunchaku.
However, the Nunchaku, particularly in NOS + Tube mode, takes the edge when it comes to depth and stage width. The midrange of the Nunchaku is slightly recessed compared to the M18i, enhancing the perception of depth and spaciousness, whereas the M18i sounds more forward and more intimate.
While the M18i’s upper frequencies sound cleaner and more detailed, the Nunchaku counters with a richer, more textured bass and an overall more immersive analog timbre.
ConclusionThe Questyle M18i is one of the most unique and sonically engaging dongles I’ve tested in the last couple of years. However, it also comes with some compromises. If you’re someone who listens mainly in a desktop setting and primarily uses 4.4 mm, the M18i offers a rich, emotive sound signature that sets it apart from the competition.
In the end, the M18i is a focused device. It’s for those who care more about sound than features; who don’t mind being tethered to a power source if it means getting a more dynamic and emotionally engaging listening experience. If that aligns with your priorities, the M18i won’t disappoint. If you need longer runtime, better portability, or software-based flexibility, there are better choices in the same price range.
SummaryPros:
+ Excellent dynamism
+ Impressive depth
+ Exciting & engaging signature
+ Very good build quality
Cons:
– Weak battery life
– Feature-light
– Price
Check Out the Original Review: Questyle M18i Review
Last edited:
In comparison, the M18i immediately feels more dynamic with an even bigger sub-bass, rounder mid-bass, and a slightly cleaner upper midrange with similar energy. Its upper treble feels slightly more refined, too. The imaging is as accurate as the DC07 Pro. While the DC07 Pro has the upper hand when it comes to air and stage width, the impressively deep stage and slightly warmer, more natural tonality quickly stole my heart.
The only issue is the price difference.
vs. iBasso Nunchaku The Questyle M18i is an interesting rival to the Nunchaku ($299 USD), using current-mode amplification with dual ESS ES9219Q DACs, and a bold, warmer timbre that makes it more unique among its equivalents. The M18i also impresses with its upper-register clarity, offering better treble bite, resolution, and expansiveness compared to the Nunchaku.
However, the Nunchaku, particularly in NOS + Tube mode, takes the edge when it comes to depth and stage width. The midrange of the Nunchaku is slightly recessed compared to the M18i, enhancing the perception of depth and spaciousness, whereas the M18i sounds more forward and more intimate.
While the M18i’s upper frequencies sound cleaner and more detailed, the Nunchaku counters with a richer, more textured bass and an overall more immersive analog timbre.
ConclusionThe Questyle M18i is one of the most unique and sonically engaging dongles I’ve tested in the last couple of years. However, it also comes with some compromises. If you’re someone who listens mainly in a desktop setting and primarily uses 4.4 mm, the M18i offers a rich, emotive sound signature that sets it apart from the competition.
In the end, the M18i is a focused device. It’s for those who care more about sound than features; who don’t mind being tethered to a power source if it means getting a more dynamic and emotionally engaging listening experience. If that aligns with your priorities, the M18i won’t disappoint. If you need longer runtime, better portability, or software-based flexibility, there are better choices in the same price range.
SummaryPros:
+ Excellent dynamism
+ Impressive depth
+ Exciting & engaging signature
+ Very good build quality
Cons:
– Weak battery life
– Feature-light
– Price
Check Out the Original Review: Questyle M18i Review
Last edited:
However, the Nunchaku, particularly in NOS + Tube mode, takes the edge when it comes to depth and stage width. The midrange of the Nunchaku is slightly recessed compared to the M18i, enhancing the perception of depth and spaciousness, whereas the M18i sounds more forward and more intimate.
While the M18i’s upper frequencies sound cleaner and more detailed, the Nunchaku counters with a richer, more textured bass and an overall more immersive analog timbre.
ConclusionThe Questyle M18i is one of the most unique and sonically engaging dongles I’ve tested in the last couple of years. However, it also comes with some compromises. If you’re someone who listens mainly in a desktop setting and primarily uses 4.4 mm, the M18i offers a rich, emotive sound signature that sets it apart from the competition.
In the end, the M18i is a focused device. It’s for those who care more about sound than features; who don’t mind being tethered to a power source if it means getting a more dynamic and emotionally engaging listening experience. If that aligns with your priorities, the M18i won’t disappoint. If you need longer runtime, better portability, or software-based flexibility, there are better choices in the same price range.
SummaryPros:
+ Excellent dynamism
+ Impressive depth
+ Exciting & engaging signature
+ Very good build quality
Cons:
– Weak battery life
– Feature-light
– Price
Check Out the Original Review: Questyle M18i Review
In the end, the M18i is a focused device. It’s for those who care more about sound than features; who don’t mind being tethered to a power source if it means getting a more dynamic and emotionally engaging listening experience. If that aligns with your priorities, the M18i won’t disappoint. If you need longer runtime, better portability, or software-based flexibility, there are better choices in the same price range.
SummaryPros:
+ Excellent dynamism
+ Impressive depth
+ Exciting & engaging signature
+ Very good build quality
Cons:
– Weak battery life
– Feature-light
– Price
Check Out the Original Review: Questyle M18i Review
+ Excellent dynamism
+ Impressive depth
+ Exciting & engaging signature
+ Very good build quality
Cons:
– Weak battery life
– Feature-light
– Price
Check Out the Original Review: Questyle M18i Review
Users who are viewing this thread
