FiiO Q15

Fiio Q15 Review​

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Fiio Q15​

Intro​

Hello, today I am reviewing and featuring one of the latest Fiio Audio dac/amps on the market named the Fiio Q15. The Q15 is simply the latest portable Bluetooth dac/amp in the very long and storied history of Fiio products. I was more than thrilled when the Q15 showed up at my door. Now, the Q15 is pretty pricey if you are pitting it against dongle dacs or other Bluetooth dac/amps on the market. However, against similar designed products the Q15 actually comes in at a great price of $399. When you couple in all of its capabilities as well as the fantastic sound of the Q15, it’s hard to argue against where the Q15 sits within the market. To put it bluntly… The Fiio Q15 is a downright beast!

Fiio​

Did you know that Fiio was established as far back as 2007?! I mean, I knew they had been in the business for quite some time, but I had no idea that they were only a few years away from 20!! Then I get to thinking of all the products that I’ve purchased from Fiio over the years. In truth, there was a long time that I was a huge Fiio fanboy and considered them the “creme dela creme” of the budget audio scene. Think about it, what brand consistently seeks to floor the consumer with features, build quality, unique aesthetic and flat-out sound quality quite like Fiio over the last 17 years, while keeping their prices relatively reasonable. The name “Fiio” is a combo word of “Fidelity” & “Hifi” (for obvious reasons) and “IO” (1 & 0, representing digital). The aspiration of the brand from the beginning was to try to uplift the reputation of “made in China”. Which is an honorable thing to do. Patriotic, I can dig that. I’m not going to go through every Fiio product, or the products from Fiio that I’ve had the pleasure of owning or trying over the years. It’s been a lot! From their earphones, both iems and tws iems, to dongle dacs, Bluetooth dac/amps, semi-portable dac amps, etc. they’ve always impressed. Some more than others I suppose. Still, Fiio has always made products that seem to last and always seem to craft products that are relevant and considered within top class in their relative price points.

Q15​

The Q15 battles amongst a growing number of similar devices with similar functionality, similar specs and similar price. I’m trying to figure out how the Q15 separates itself and where that separation is. We’ve seen other devices like this. Devices like the IFi XDSD Gryphon, Topping G5, etc. I could even cite one of the more popular units over the years and the Q15’s predecessors, the Fiio Q5 and Q5S. Finally, I would like to think of the Q15 as somewhat of a smaller and more cost-effective version of the flagship Fiio Q7. Of course, there are quite a few others not mentioned but I do feel that this type of power, flagship dac chips, mobile size and Bluetooth functionality does make these devices a bit rarer than some others out in the Audio-sphere. The Q15 comes in at a reasonable $399 and I will try my best to answer if this price is reasonable or not. That all said, I think I’m ready to get going on this one, the Fiio Q15…

Non-Affiliated Purchasing links:​

–Amazon
–HiFiGo

Gear used for testing​

-Tanchjim Origin

-Simgot EA1000

-Letshuoer Cadenza 4

-Yanyin Canon II

-Softears Studio 4

-Actually, I used many sets during my listening time, disregard above

Packaging / Accessories​

There is never a whole lot to say about the unboxing experience when the product is a source device. The same is true of the Fiio Q15. The Q15 comes in a medium sized (what’s medium?) cardboard rectangular box. On the front is a picture of the front and the back of the Q15 as well as some hi-res logos, and really… that’s about it. Once you slide the inner box out from the narrow end, you’ll notice a slim cardboard folded in the center. Inside is the manual and some other reading material. Lift off that layer and you are presented with the Q15. I gotta say, this device looks sweet. Under the Q15 are two more boxes. Inside the boxes you’ll find a usb-a to usb-c adapter, two silicone rings for strapping down your Q15, one 3’ type-c to type-c charging cable, and one very short type-c to type-c data cable. You’ll also notice a really nice black cloth drawstring bag that is easily large enough to store your Q15 as well as a few other goodies. Not a bad unboxing and I wasn’t expecting much.

Specifications​

Brand: Fiio

Model: Fiio Q15

Dac chip: AK4499EX / AK4191EQ

Bluetooth chip: Qualcomm QCC5125

Bluetooth codecs: Aptx-Adaptive, LDAC, Aptx, Aptx-Hd, AptxLL, AAC, SBC

Bluetooth Reception: Bluetooth 5.1

Weight: About 305g

Dimension: About 143.5×71.75×21.75mm

Display: 1.30-inch TFT (240*240) bezel-less display

MQA: Yes

-Audio

Sample rates: Cyan: 44.1kHz/48kHz, Yellow: 88.2/96/176/352.8/384/705.6/768kHz

Green: DSD64/128/256/512

Purple: MQA

Firmware Upgrade: Bluetooth firmware supports upgrade through OTA, XMOS/system firmware supports upgrade through USB

-Output power

3.5 single ended:

Super High Gain- @32ohms- 400mw @300ohms- 54mw

Ultra-High Gain- @32ohms- 625mw @300ohms- 85mw

4.4 balanced:

Super High Gain- @32ohms- 1060mw @300ohms- 215mw

Ultra-High Gain @32ohms- 1610mw @300ohms- 340mw

Output Impedance

3.5 single-ended:

Super High Gain- >1.0

Ultra-High Gain- >1.0

4.4 balanced:

Super High Gain- >1.5

Ultra-High Gain- >1.5

-Battery

Power Supply: Supports fast charging

Battery Capacity: 5500 mah lithium Polymer

Charging time: Roughly 3.5 hours

Battery Life: 3.5 single ended: +/- 9 hrs 4.4 balanced: +/- 8hrs

Build / Design / Internals​

Build Quality​

The actual quality of build on the Fiio Q15 is pristine. The sides of the unit are covered with aluminum while the front and back panels are completely made of high durability AG glass as well as some areas on the back panel made of plastic. Fiio of course had to do this for the Bluetooth antenna. Looking at the front you’ll find the fantastic IPS screen for relaying certain info back to the listener. Next, on the left side you have four easy to push buttons which all have their own functionality including play/pause, cycle through settings, as well as on/off etc. Finally, on the top you’ll find the volume wheel knob which doubles as a multi-purpose button. There’s the 4.4 headphone out as well as the 3.5 headphone out and line-out. On the bottom of the Q15 is the “phone mode” switch to press when you don’t want to draw power from your phone. You’ll also find coaxial in (with dustcover), and two usb type-c ports. One dedicated entirely for charging and one for data/decoding/charging. And finally, you’ll also see the desktop mode switch on the right-side bottom.

It’s a Fiio unit​

Everything is well thought on this device folks. The side bevels are slightly raised so as not to scratch the glass panels. However, one may take issue with the hulking and beefy size of the Q15. Now, I don’t find this an issue because I knew what I was getting. Still, the Q15 is rather large I’d say, and it is also on the heavy side. I certainly feel that the Q15 is a bit large for stacking units. Not bad with a slender phone like I have but stacking with a dap etc. will be a pocketful, that’s for sure. Folks, Fiio does many things right, but what they never get wrong is build quality. If you see a Fiio logo then you can be damned sure whatever device or earphone you are looking at is built well.

Well that sucks…​

By the way, you’ll see in most of my pictures that my Q15 is attached directly to my LG V60. I did this simply because I accidently dropped my precious Q15 from a 6 ft. bookshelf and it landed directly on the back panel of glass. Well that sucked! So, since the primary way I listen is with the LG V60 attached, kinda like a glorified dap, I simply used double sided tape from the Q15 to my LG V60. Problem solved, you can’t see the broken glass and I basically have one of the best daps on the market under 1k. So, forgive me if I don’t have many pictures of the Fiio Q15 by itself. I am still sick to my stomach over that. One thing I never do is drop anything, break anything, everything pristine, put away nicely, clean. Then my Q15 drops and my heart sinks. Ugh.

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Design​

However, it’s the design that caught my attention. This is a beautiful looking unit with polygonal sides, which is nice for easy holding and gripping and it simply looks dope. That glass just looks gorgeous and the IPS screen really does pop out at you. Honestly, I feel the Q15 is one of the better-looking source devices out there. You can actually purchase the Fiio Q15 in two colorways, titanium and black. Both look tough. Obviously, the unit I have is the titanium model. Fiio always takes special consideration for aesthetics, and they always come up with fresh designs that aren’t overused or played out. The Q15 is no different.

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Screen / Display​

This is one truly great component of the Q15. Fiio actually went with a 1.3” IPS screen with very vibrant colors that can be dimmed or made brighter in the settings. The display truly tells you everything about the Q15 and what settings are being used at any given moment. This screen has a 240 x 240 TFT bezel-less screen which really does pop, even in the afternoon sun. Of course, Fiio is not the first to incorporate a display screen into their design. But I do feel that Fiio makes one of the best screens for their devices. This goes for their cheaper dac/amps up to their flagship daps. Always a nice screen with vibrant colors. At the end of the day aesthetic really does play into the experience, no matter how much some crotchety “audiophiles” like to tell you it doesn’t.

By the way, around the collar of the volume wheel the Q15 also has an RGB light indicator which you can change within the app. Whenever you open up the settings menu with the top volume knob, you can cycle through those settings by turning left or right, and you can select different settings by pushing down on the volume knob. It takes a minute to get used to, but it works like a charm. There is a litany of settings on this screen. From picking SE output, BAL output, digital filters, max volume steps, gain modes, Line-out mode, MQA mode, usb/coaxial/Bluetooth, screen dimmer, screen timeout, idle time, rotate screen (very useful), u-audio, an option to put the Q15 in PEQ mode, change the language and a factory reset setting. Phew! I may have missed some, but you get the gist.

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Button layout​

Like I already stated, the Fiio Q15 has some very useful buttons which control darn near everything on this device. Minus some very important features which I will talk about in the “Fiio App” section.

What buttons?​

So, the Q15 has four buttons on the left side of the unit when the screen naturally faces you. You have a power button on top which also doubles as a method to turn the screen on or off. Under the power button is the rewind/back button, the play/pause button, and the forward/skip button. Take note, the buttons on the side only function during Bluetooth usage. On top of the Q15 is a volume knob which can obviously run you through all steps of volume. However, it also acts as a button.

Now, on the bottom of the device you’ll also see two switches on each side of the bottom. One switch is labeled “Phone mode” and the other is labeled “Desktop mode”. The phone mode is a fantastic option as it allows you to not drain your phone’s battery when plugged directly to a phone. This is how I listen 90% of the time. I actually have my LG V60 attached to the Q15 using double sided gorilla tape and hooked together with a USB Type-C to usb Type-C wire. The Desktop mode switch allows the user to

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Internals​

There’s a lot packed into the Q15. This portable dac/amp is absolutely loaded with functionality and processors, chips, etc etc. There’s no shortage of circuitry within the Q15. I will very quickly lay out what I know about the Internals. First off, let me just say that Fiio really does think of everything. These people are master class when it comes to building source devices.

What’s inside?​

To start, Fiio chose an awesome Bluetooth chip in the Qualcomm QCC5125 SOC Chipset, which of course brings you hi-res audio and Bluetooth 5.1. You also have many codecs in SBC, AAC, Aptx, Aptx-Hd, AptxLL, Aptx-Adaptive, and LDAC. This is a huge swath of codecs to fit whatever device you own. I prefer Aptx-Adaptive, though much of the audio world feels LDAC is the best. I disagree, please trust me that bit rate has little to do with the end result. But that’s neither here nor there. The Q15 also has a wonderful flagship dac combo with the AK4499EX and the AK4191EQ chips (both AK’s velvet dac chips). By the way, I am a huge fan of these chipsets and glad to see them on this device. Also, both digital and analog portions separate from each other for a higher fidelity sound. This helps in reducing crosstalk per Fiio’s promotional material. Fiio also implemented all digital components to be right at the same level as their flagship dac/amps, the Fiio Q7 and the Q15. Using an Arm processor the Q15 can faithfully decide USB, coaxial as well as Bluetooth signals. They actually went with a wonderful XMOS 16-core XU316 usb controller which supports up to 32bit/768khz, DSD512, and full MQA Decoding. On top of that Fiio chose to use a TI Cortex M4 processor which is used for various tasks. Basically, does all the menial tasks which make the user experience better. Now, I have zero idea what op amps Fiio went with, but I can assure you they are killers. They use dual audio crystal oscillators. Folks, these are the most notable internal components.

Premium Decoding with High-End AKM DAC: –
FiiO has featured AKM’s current flagship AK4499EX+AK4191 combo 32-bit DAC chipset. It provides excellent performance while decoding high-resolution audio signals. The resulting output is extremely clean and precise with ultra-low distortion and high SNR performance.
Qualcomm Flagship Bluetooth Chipset: –
FiiO Q15 adopts Qualcomm’s flagship QCC5125 chipset. It enables low-latency wireless Bluetooth connectivity with high-definition codecs including LDAC, AptX HD, AptX, and more. Enjoy high-resolution sound even wirelessly with the Q15.
XMOS 3rd Gen USB Processor: –
FiiO has opted for high-end chips to ensure top-quality performance on the Q15. The DAC adopts XMOS XU316 16-core 3rd-gen USB chipset. It enables high-resolution audio signal decoding supporting 32-bit/768kHz PCM, native DSD512, and full MQA signals.
Fiio Promotional​

Click to expand...

Features​

In this section I will quickly rundown some of the notable features on the Q15 that will aid in your enjoyment… Possibly. I won’t go into huge detail about each but instead simply quickly go through them so that you have an idea what they are.

Output power​

One thing the Fiio Q15 is NOT… is weak. In fact, the Q15 comes equipped with five gain modes to choose from so to best fit the iem or headphones you’re listening to. This device has some very serious output for a mobile device, with up to 1600 mw @32 ohms on Ultra-High Gain when the Q15 is put into Desktop mode. I mostly keep this unit on Super High Gain while listening on balanced as the Q15 will get you about 1060 mw @32 ohms. However, single ended at Super High Gain will provide up to 400 mw @32 ohms. So, no matter what, you have plenty of power for iems on either balanced or single ended. I don’t have any full-sized cans to check but I’d be willing to bet that the Q15 will be able to drive most sets just fine. The Q15 is a powerhouse folks.

Dual Headphone Output with Strong Amp Section & 5-Level Gain modes: –
FiiO Q15 features dual headphone output ports, a 3.5mm single-ended port and another 4.4mm balanced output port. You can pair different headphones and IEMs with both these ports effortlessly. The Q15 has a strong amp section with a five-level gain mode. It has a maximum output rating of 1600mW, and five-level gain modes enable easy connection with both high-sensitivity and low-sensitivity IEM and Headphones.
Fiio Promotional​

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Fiio App​

One great feature of many Fiio products is the inclusion of their app. The “Fiio Music App”. Fiio also has a very handy app in the “Fiio Control App” which is specifically meant for their devices. You really can do a lot within these two apps, but it changes per the device. As for the Q15, you can check firmware updates, check volume, check battery, select the RGB gradient color for sample indicators, select Bluetooth codecs as well as channel balance. Beyond those settings, you also have Fiio’s very nice EQ and PEQ which really do work like a charm. Once you set those EQ parameters then they will save to the device itself. The PEQ is easy to use once you’ve played around with it for a while. It’s pretty intuitive I would say as they make it easy to configure and dial in the sound which suits you. Obviously, the 10 band EQ is also pretty cut n’ dry as well. Honestly, it’s a very good companion app that works very nicely with Fiio devices.

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Connections​

I’ve mentioned already that the Fiio Q15 can be used in a variety of ways. It really is a very talented unit. You can listen over Bluetooth (I think we’ve established that) which will give you up to LDAC when your device supports it. The Q15 also supports a Coaxial connection, which is a fantastic route to go which will give the Q15 the ability to render up to 24bit/192hz audio and I believe DSD64 (if I’m not mistaken). And next you have a usb connection which will supply up to 32bit/768khz PCM and up to DSD512.

Bluetooth​

One of the best features of the Fiio Q15 is the fact that it does indeed have Bluetooth. However, it isn’t just any Bluetooth. Again, Fiio chose to use a very competent SOC Chipset in the Qualcomm QCC5125. This allows quite a few of the best audio codecs that we have on this earth of ours. Like I said before, SBC, AAC, Aptx, Aptx-Hd, AptxLL, Aptx-Adaptive, and LDAC are all codecs which are on board with this device. The Bluetooth range is fantastic as well. I have a 185 ft. driveway and I easily walked the entire length with my phone in the garage when I was getting the paper from my mailbox. No joke, folks the music didn’t even stutter. Now, this all changes when you introduce walls and other partitions. But still! 185 ft! That’s cray cray! At any rate, the Bluetooth is also the best sounding that I’ve ever heard in my life, and I have many good Bluetooth devices. Out of every device I’ve ever heard, this one is the champ. As always, there’s the faintest Bluetooth compression, but out of all the BT devices I’ve tried… the Q15 feels the most open and dynamic. Of course, whether on Bluetooth or through any other wired port, the Fiio Q15 really sounds great.

Battery Life​

Now we come to battery life. This is a very important thing to discuss. Nobody wants a device that loses its battery in two hours. Thankfully Fiio promises roughly 8 hrs of straight listening using 4.4 balanced and 9hrs using 3.5 single ended and that is with Super High Gain enabled. Folks, that’s pretty darn good. One great thing is that it doesn’t draw battery from your phone for instance, when connected by way of a usb type-c cable. So long as you have the “Phone Mode” switch enabled. To be completely honest, I have yet to drain the battery in one listen and I have not actually checked to see if Fiio’s claims are true. I am going on blind faith, and I ask you to forgive me for not checking this spec out. Still, 8-9 hours is very good for the amount of power the Q15 is shelling. That all said, remember that many factors will. Effect your battery’s performance. Volume level, gain levels, Bluetooth codecs (LDAC is a battery drainer) are all battery guzzling things to be aware of.

Desktop Mode​

To get the Ultra High Gain and 1600mw of raw power, you must have “Desktop Mode” enabled using the switch named… “Desktop Mode”. Pretty easy. However, you must also actually plug your phone into an actual outlet by using the dedicated type-c PD charging port on the Q15. Actually, plugging the Q15 into a dedicated usb-c PD power will bypass the internal battery altogether. For a smaller dac/amp which was created for portability, I feel that the Q15 really does rival some very good desktop setups, and I do feel that Desktop Mode takes my listening a notch higher. This is kind of the case with any desktop device. To be perfectly honest, when I listen to my music, I’m usually moving around. I really don’t enjoy sitting at a desk listening to music. I want to move and so I got rid of my desktop setup. Thankfully, I remember now why I enjoyed listening in this way. It won’t change your life or anything, and it’s only a miniscule step above some of my mobile setups… but it’s nice. Fiio does a good job at making it very easy to enjoy and set up.

Sound filters​

Okay, so this is a feature that most devices have anymore, even on less expensive devices. Heck, the EPZ TP50 dongle dac which costs much less than the Q15 has sound filters. These filters make barely discernible differences as each filter does what it’s programmed to do in affecting the phase of a signal. I have a very rudimentary understanding of exactly how these filters actually work. Enough to explain to a laymen audio newbie but not enough to actually teach you anything. At any rate, the Fiio Q15’s sound filters do make a slight difference. Much more than my old Fiio M11 Plus ESS or my iBasso DX240, heck even more-so than my Shanling M6 Ultra. I don’t know why that is. Maybe Fiio really brought it all together for this device. However, these differences are extremely small. Now, at the device itself, in the settings (press down the volume knob and cycle through to the “filters”) you’ll have to open up the “Filters” option. Inside you’ll see Fast, Slow, Mini, Mini Slow, Super Slow, and Low Dispersion. Those are the filters that you have to choose from and from my experience these settings do seem to help in some situations. Heck, maybe your ears are even better than mine and you can tell an even greater difference.

Sound Impressions​

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The source difference…​

Folks, I’m just going to explain how I treat “source device” reviews really quickly. I don’t usually go through the same process in reviewing a source as I would an iem. For one, the sound that you get from your source has much more to do with your earphone or over-ear headphones. However, the source device does play a huge role in how that iem will come across. The point is, I’m not going to go through “Bass”, “Mids”, “Treble” to exhaustion, like I would an iem “transducer”. That all said, the source does greatly affect the sound and a source will make an impact on how a warmer sound signature, snappier sound, colder, more analytical, low-end emphasized, emphasized highs, and the list could go on for quite some time. What you this “synergy”, and I can’t come up with a better word for it. When iem and device “synergize” in a way that hits your sweet spot you’ll know.

Q15​

Friends, out of all my sources, the Fiio Q15 really impresses me. I cannot sing it’s praises enough. As I said earlier, I mainly listen to the Q15 attached by a type-c cable to my LG V60. I use double sided gorilla tape to hold them tightly together and it works better than anything I’ve tried to date. You’ll never use a rubber band again. Anyways, the Q15 is truly a fantastic device for the price and if I’m being honest it rivals plus 1k daps quite easily. It actually probably surpasses some of them pretty easily too. Using the LG V60 and its beautiful screen and the Q15 together makes this setup one of the best daps that I have in my possession. Truly a gem.

So what does it sound like? ​

When paired with my V60, the Fiio Q15 comes across neutral to my ears as the velvet dac chips internally aren’t nearly as warm as I thought they’d be. The Q15 has a very clean signature that will certainly benefit any number of iems. This is a device which tends towards the natural and organic side of sound. You won’t hear the Q15 coloring any portion of the mix all too much either. The Q15 offers a smooth approach, satin note edges, yet also isn’t devoid of crispness… at all. The sound simply isn’t ultra energetic which almost reinforces that smooth sound. However, I feel note definition is extremely well done on the Q15 as it’s able to to traverse those more knife edged notes, which may come across as crispness, but really, it’s just clean, less rambunctious and slightly less sprightly than some other sources. Clarity is phenomenal too. Even using iems on Super High Gain leaves a dead silent background. Nothing but absolute dead-black air in the backdrop of my listening sessions.

Contoured stability​

When I think of the Q15 a few descriptors come to mind. Those being “note density”, “cleanliness”, “precision”, “balance”, “extension”, “contoured” & “smooth”. All these words fit this device perfectly. I would usually say that a warmer iem/headphone would fit best with a device like this, but even cooler/brighter sets like the Simgot EA1000 (EA1000 Review) sound absolutely amazing with the Q15 attached. In fact, the EA1000 seems made for this device. So, the Q15 isn’t going to over emphasize certain areas of the mix, but instead provide contoured stability and definition to any set it seems. Let’s quickly run through each 3rd of the mix.

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Low-end​

Compared to other source devices, the Q15 does seem to bring upon snappy lows with extra punch, good fullness and good solidity to notes on most any set I’ve used. This is not a super warm and profuse low-end emphasis, but instead one which adds awesome definition. You won’t find the Q15 turning a bass-lite set into a bass lifted iem. On the flip, the Q15 also won’t turn a bass heavy set into a bass moderate set. I feel the Q15 allows a set to simply… be what it is, just better. It refines the low-end to a degree. Also, like I said the Q5 does add some real quality punch to the low-end. I love this leaner but dense sound with wonderful textures and great layering of the low-end as well. It’s speedy, transient-swift and dynamic. But not overtly boosted.

I notice the Yanyin Canon II (Canon II Review) really does benefit from this area listening with the Q15. The Canon II has a slightly slower or more atmospheric style low-end which does sound more compact and less loose on attack through release. Transients come and go in a tight manner. The Simgot /EA1000’s low-end is already dialed in wonderfully. I can also hear that there’s a more layered approach from something like the iBasso DX240 for instance.

Midrange​

The midrange is slightly more forward than some devices and I feel it really helps to add an organic feel to midrange instruments and voices. Now, obviously a lot will depend on your iems/headphones, but for the most part the Q15 will help to bring the most out of any set’s midrange. The midrange operates in a neutral tonal coloration. Which is, no coloration really. Timbre will only be an asset to your earphones or headphones too. Again, just like the low-end I hear better transients and a more textured sound with the Q15. The Q15 will help with details, it’ll refine some aspects of your iems and it’ll add better macro-dynamics or micro-dynamic shifts. It has very good control from what I’ve gathered. Folks, the Q15 is really fantastic.

The Letshuoer Cadenza 4 (Cadenza 4 Review) has that milky midrange with smooth mm and a certain warmth that is absolutely engaging. When the Q15 is the source, it is quite noticeable that the Cadenza 4 has better spacing (to a degree), more succinct or concise, and with a more pronounced note presence. If that makes sense the already tight and smooth Softears Studio 4 almost comes across slightly more vivid and focused. That’s the Q15 difference, among other good quality traits. Obviously, I’m not going to keep listing every set I own, but I want you to at least get the picture. It isn’t easy describing sound on source devices and especially describing certain areas (bass, mids, treble) of a source device.

Highs​

The treble region is one of my favorite aspects of the Q15 because it isn’t overly cooked and force-elevated up top. Yet, it excels at note agility, definition, even adds some bite to notes on the right occasions. The Q15 will aid your iems/headphones with an ever-so-slightly better sparkle, a sense of air, and even a certain brilliance, while still holding tight to that smoother delivery. I hear nothing nasally, metallic, or any added sibilance and the Q15 treble is without any annoying peaks. The treble is another wonderful part of the Q15’s tuning. This is a treble region which is subdued in that… it isn’t overly raucous or shrill, it isn’t strident or blatantly grating to the ear. Yet it’s tastefully emphasized and has good extension which will bring out the best in many iems or headphones.

The Tanchjim Origin (Origin Review) is a fantastic iem. No doubt about it. However, I enjoy how the Q15 helps give the Origin better treble distinction. Just a bit more snap and presence. It gives the Origin a bit more bite and haptic feel to notes. Now, these are not world changing differences, but they are most certainly differences, nonetheless. Or the QOA Aviation (Aviation Review). Nobody would accuse the Aviation as having an amazing treble region. So how nice is it that the Q15 is able to give the Aviation some controlled levity. Notes have a more acute and precise sound to them. At the end of the day, the Fiio Q15 treble is quite nice with a natural feel to it.

Technicalities​

When speaking of the technical capability of a source device like the Fiio Q15 I find it’s a bit easier to explain because those attributes are usually easier to delineate and discern. Like soundstage. The soundstage does seem to have better depth with the Q15 and an altogether open feel to my music. The Q15 won’t turn a congested and narrow sounding set into a stadium or anything, but it will accentuate the openness of some sets. Separation of instruments and voices is certainly aided as well. Also, the Q15 has a knack at good imaging when paired with an adequate iem. Honestly folks, the second you listen with the Q15 you’ll notice that it is a natural rendition of a pleasing but yet technical tuning.

Is it worth the asking price?​

The big question that I will always get is if the device I am reviewing is worth the asking price. Does it stand next to similarly priced devices? In the case of the Fiio Q15, I feel it is the best I’ve heard in the price point for portable dac/amps. For me it’s a no brainer. As a mobile source, I feel the Fiio Q15 sounds closer to a +1k dap than anything else. Then, put it in desktop mode and it does sound a bit better. Of course, there is some competition out there with some formidable dac/amps which really do a stand-up job for their respective prices. You could also consider that most of the audio world relies on dongle dacs anymore which is far cheaper than something like the Q15. So, when asking about “worth” it is good to consider your own listening style. You may not want some bulky dac/amp to carry around. To you a dongle dac may serve the perfect purpose for you. Small, fairly compact, good enough sound quality and great for mobile situations. However, if you want something with fantastic versatility and even better sound fidelity than I would absolutely say with 100% confidence that the Fiio Q15 is worth the $399 to own it.

The Why…​

First off, it’s built very well. Even though I did crack the back faceplate glass on mine, by accident of course. Oh well. Anyways, for the most part the build is really exceptional. Just don’t drop it from about 6 feet off of a bookshelf so that it lands squarely on its back panel of glass. Yes, that sucked. Moving on. Anyways, the look is also very slick, like any Fiio product. Folks, the Bluetooth is simply amazing. Truly the best Bluetooth sound quality I’ve ever heard. It is almost imperceptible between wired and Bluetooth connection. Truly fantastic. Another reason why the Fiio Q15 is worth every penny is the features as well as the functionality of those features. The good battery life, the phone mode, desktop mode, the awesome screen, etc. Next, the output power of the Q15 makes it a powerhouse! Easily able to drive any iems and most headphones with ease. However, as always, it’s mostly about the sound and I won’t reiterate everything I’ve said this entire review, but the sound quality is 100% unrivaled at $399. I’d argue this with anyone. This is the best audio you can buy in this form factor… Hands-Down, under $500. Folks, the Fiio Q15 provides so many different ways to listen to some of the best audio that money can buy under 1k and even more and it costs only $399.

Conclusion​

To conclude my full written review of the Fiio Q15 I want to extend a huge thanks to any of you who took the time to read the words that I wrote. It means the world to us at Mobileaudiophile.com and it means the world to me. You took your valuable time to read my honest thoughts by clicking the link for this review which is the best thing you can do for us. In return I do hope I’ve helped you at least a little bit. It is my greatest hope every time I write a review.

Other perspectives ​

Please, do yourself a favor and watch, listen to, or read other thoughts concerning this awesome dac/amp. The Q15 is amazing to me, but the next guy may not see things this way. It’s just human nature folks and it’s something that shows up in our awesome hobby more than any other hobby on earth. Other than… maybe wine tasting. But that’s about it. Please find out as much as you can. I’m sure there are other reviewers who have better details about the Q15 and possibly can explain things better. Who knows. I just want you to get it right. $399 is a lot of money and a fortune for 99% of the people on our planet. Now with that, I think I am done friends. Take good care, stay as safe as possible and always… God Bless!

General/Build/Packaging
Fiio needs no further introduction. I have tested and reviewed several products from the brand and I have good experience with their products in general. I have their latest portable dac/amp with me today, the Fiio Q15 which houses AK’s flagship DAC, the 4191+4499EX as well as a plethora of components within the Q15.
The build quality is very solid and premium looking, front and back glasses, good thing it came with a protector pre-applied, the rear glass is in matte finishing and it looks very good. The buttons and the volume knob has very good tactile feedback to it and the buttons are not wobbly. The volume button also acts as a button to enter the menu and input selection (click and long hold).
The packaging itself is good and nothing to complain about, long and short type C cable included, a storage pouch and some silicon strap for you to stack and keep your device secure while stacking, sadly, there isn’t any case included and it has to be bought separately. Let’s take a look at the specifications below:

Specifications (Full Specs here)

• DAC: AKM AK4191 + 4499EX
• Sample rate : PCM : 8Hz – 768Hz (8/16/24/32bits) native – DSD64/128/256/512 MQA full decoding
• System clock: Full synchronisation technology with TI Cortex M4 Processor
• Outputs: 4.4mm Pentaconn // 6.35mm TRS
• Input: USB-C // Coaxial // Bluetooth
• Screen: 1.3″ IPS Screen from LG
• Bluetooth support: SBC, aptX, aptX HD, aptX adaptive, LDAC
• Battery: 3.8V 55000mAh Li-Polymer
• Quick Charge: yes, PD2.0
• Battery life: 9h with wired headphones (3.5mm), 8h with a Balanced headphone
• Charging time: around 3.5h
• Size : 143,5mm x 71,75mm x 21,75mm
• Weight: 305 g

IEMs/Headphones/Equipments used for this review

• Letshuoer Soloist
• Spirit Torino Twin Pulse IEM
• 7Hz Legato
• Macbook Air M2 -> Fiio Q15 -> Tidal
• Macbook Air M2 -> Fiio Q16 -> foobar 2k (tracks ranging from 16-44 to 24-192)

Foreword
My review is solely based on what I hear via my equipment and I never consider my reviews to be objective in any way rather a subjective approach. Do take into consideration that everyone’s ear anatomy is not the same, so the psychoacoustics perception might be different as well, but i believe it will not stray too far

Features
Desktop Mode

• The Q15 comes with a desktop mode toggle, and also a type c port specifically for power/charging
• The desktop mode is enabled when the toggle is on and a powered via PD charger, this will enable the Q15 to deliver up to a whopping 1.6w on 4.4 balanced out
• With the desktop mode on, the dynamics are a step higher when paired with transducers that scale well with power

Fiio App Compatibility

• PEQ is supported via Fiio’s control app
• The app allows you to customise the LED on the volume knob (breathing or steady)
• Firmware update

Battery Life

• Normally i take the battery life claim from the manufacturer with a pinch of salt, but the Q15 does surprised me and the battery life is actually very good
• On high gain and volume level 40 /120, looping through DSDs and Flac files, it lasted approximately 8 hours +-, which in my opinion is good

Sound Impression (Fast Filter and no EQ/PEQ USB in Mode)
The Q15 has been aged for approximately 50 hours prior to writing this impression. The sound of Q15 is nothing but amazing. Dead silent background, zero noise. I’m not saying it will make a bad sounding/ badly tuned IEM turn good, it simply makes what is already good a step further and eeking out every bit of hidden potential your IEM/headphone have. I wouldn’t say the Q15 is neutral, there’s a slight lift on the lows, but the overall listening impression to me is that it is natural and the technicalities are very impressive.
Soundstage is largely dependent on the transducers and mastering of the songs, but Q15 does render the soundstage very open and let you have a good perception on the stage size in terms of depth, width and height.
Imaging is absolutely excellent with very good separation and layering, instruments can be pinpointed easily and they sound like they each have a space of their own and not mushed together.

Pairings
Letshuoer Soloist

• Pairing the Soloist with the Q15 is nothing but fun, the bass is definitely elevated, it has more punch now and better extension, it is tight and the texture is good as well, all these without messing with the mids and highs, this is evident when listening to Gojira’s Amazonia, the double paddle especially has more punch
• The mids are slightly forward and doesn’t sound that recessed
• The treble sounds more open and the imaging and detail retrieval is just amazing, i can definitely hear the notes that i need to focus more previously in order to hear it, the Q15 does it with ease, Hans Zimmer’s Why So Serious ( The Dark Knight )
• Soundstage has more width and depth, doesn’t sound that 2D anymore

Spirit Torino Twin Pulse IEM

• The Twin Pulse is neutral with slight warmth on its own, based on my listening impression pairing it with Q15, the soundstage is definitely “bigger” than before, imaging that is already good has been taken a step further with excellent separation as well as layering, simply amazing
• Bass is slightly faster, but the rendered texture is also improved
• Not much changes on the mids
• Improved detail retrieval, listening to Why So Serious, the notes that used to sound faint can be heard easily now

7Hz Legato

• This particular pairing is the most interesting to my ears
• Legato itself is quite warm and bassy to my ears, pairing it with Q15, the dynamics are improved as well as the treble
• Bass has better control and tighter, while retaining the punch
• Not much improvement on the detail retrieval, but slightly better, afterall Legato isn’t tuned to be analytical in the first place
• Soundstage has very good width and depth to it and seems to image better as well

Comparison (iFi Gryphon)

• Uses different DAC chip (Burr Brown) and has lesser power output compared to Q15
• Different sound signature compared to Q15, more coloured sounding compared to Q15, slight neutral and warmish signature
• In terms of size, Gryphon is smaller and slimmer in profile
• Analog stage EQ, xBass and xSpace, and also the ability to taylor the level of both xBass and xSpace to your preference
• Feature wise, iFi does have the IEMatch which allows you to use sensitive IEM without any hissing noise when enabled, also the ability to use the Gryphon as amp only
• Q15 definitely has more power compared to Gryphon, 1.6w vs 1w on balanced output
• Having used both and swapping around for A/B test, i definitely prefers the Q15 than Gryphon for the sound signatures, it has better dynamics and also very good technicalities yet it doesn’t sound analytical

Final Thoughts
Having tested and used the Q15 for quite some time prior to publishing this review, Q15 definitely has what it takes to make the statement in the fast moving market with various competition. Q15 is a very versatile product and I find the use case is very suitable for portable users and also headphone users that don't use overly power hungry headphones.
The power output is definitely sufficient for most IEMs out there and also headphones that aren’t overly power hungry (Tested with the headphones which I owned, Hifiman Sundara Open Back, Hifiman Edition XS, Hifiman Sundara Closed Back, as well as Aune AR5000). In terms of sound, it is definitely not neutral yet the coloration is somewhere in between and quite balanced overall, which I personally enjoyed and find it rather easy to pair with most transducers. The only gripe that i have with it is the size, if only it has a slimmer and shorter profile, then it is definitely an undisputed portable power house, however, it is also understandable that packing so much tech and features into the Q15, there are definitely some limit in terms of the size. All in all, if you enjoy a dynamic sound yet you don’t like an overly colored signature, Q15 is definitely highly recommended!



*A big thanks to Fiio for sending this over for the purpose of this review. I thank them for their support.

Head over to their official AliExpress Store and official website if you are interested in getting one:

Fiio Q15 Product Page
Fiio Q15 Purchase Link - Non Affiliated

FIIO Q15
AK4191EQ + AK4499EX
$400

First I want to thank FIIO for sending me this DAC for this review, rest assured my review is 100% my own personal opinion.

If you're interested on the Q15, you can check the official FIIO page below
https://www.fiio.com/q15

Unboxing
Inside the box, you get :

• Q15
• Quick start guide & warranty card
• Soft pouch
• 2pcs of rubber band
• Silicone pad
• 2pcs of type C to C cable (short and long)
• Type C to A Adapter

Build Quality


The side is made from metal, left side of the device has a power button, rewind, play pause, forward button.

Right side is pretty much empty

The front and back is made from glass, while the front also having an LED screen, so user experience and system navigation is very good and is upgraded compared to the old Q5S.


Upper side and bottom side looks like made from some type of plastic.

On the upper side there is a multi function knob, that act as a volume controller, menu navigation, and a button, also a 3.5mm and 4.4mm pentaconn port.

While on the bottom side of the device you can find a “PHONE MODE” Switch ON / OFF, COAX IN, USB IN, and POWER IN, and “DESKTOP MODE” Switch ON / OFF


Phone Mode can be used when you're using the USB connection to your phone. It makes the Q15 not draining your phone battery.

Desktop Mode is used to power the Q15 from external power (plug the power source to the “POWER IN” port) so it does not consume its battery while in use with your PC.

The build quality itself is pretty solid but on the heavier side (300g) and also as big as my Asus Zenfone 10 on the dimension with almost 2 times thickness.

When I unbox the Q15 I'm genuinely shocked because of how big the Q15 is, its like the old Q5 and Q5S goes GYM for almost 4 years and is getting buffed lol.

Menu & Options & Versatility
On the Q15 itself, you can set a lot of options to make the user experience truly yours.

While on the FiiO Control APP, you can set RGB ring ON – OFF, Bluetooth Codec and EQ.


Example of Usage Scenario :

• You can use the Q15 as your USB phone stack without draining your phone battery thanks to its phone mode switch.
• You can also use it as a bluetooth receiver.
• You can use the Q15 as your main desktop DAC without damaging its battery because it is powered externally from the USB port thanks to its desktop mode switch.

Battery Life
Tested using Bluetooth mode, with IEM, on balanced 4.4mm I get around 10 hours of playback

Sound

I would like to describe the Q15 as a neutral, smooth, liquidy and analogue sounding.

The Q15 has 6 filters that you can choose, but I found the FAST filter to be my favorite,
so for the sound part I will describe it with the FAST filter.

Bass on the Q15 is very neutral but has a very good body, I would say the bass got a bit highlighted, not a lot, but just a hint of touch to add more musical feelings toward the music.
Bass here is also very grand, it sounds like it got a tons of layers to it.
Not only that, it also sounds very organic / analogue sounding and has a complete layers of decay.

Midrange on the Q15 is very neutral but got a hint of extra body to the sound, again, it sounds analogue to my ears.
Vocal and instruments has a very good and satisfying body and decay is on the longer side.
Midrange presentation here is very liquidy and effortless to my ears, it does not demand your attention but it just like sound is happening and served to your ears.

Treble here is smooth but very detailed and extended. Tested using my controversial and super picky to the source Hidizs MS5, it sounds SMOOTH, yes the “ZINK” of the MS5 is gone on the Q15. It sounds super enjoyable to my ears ! With wrong sources / pairing, the MS5 can be sounding bright and harsh to listen to.

Treble here has a superb layering, details and complete decay layering, it does not sound like the treble is simplified in any way.
It is presented in a very effortless manner just like its midrange, it does not demand your attention but all the details are there for you to explore by yourself.

Overall sound presentation here if I had to describe what it has in common between all frequencies is just how analogue sounding the Q15 is.

I honestly don't know if it's the selling point / goal of the newest AK4191EQ +AK4499EX to create an analogue sounding DAC or what, but the Q15 has that resistor ladder DAC characteristic to it.
It sounds just like my FC6 + RU7 Combined with better layering and details.

Technicalities
Is excellent for its asking price of $400USD

Stage is very grand and open sounding with very good rendition of the stage shape and size.

Detail Retrieval is spectacular ! It sounds very detailed and nothing is simplified here, for example on budget or cheaper DAC, decay sounds usually presented in an overly simplified way.
With the Q15, you get full layers and information of decay sound, its micro detailing is superb.

Imaging is excellent, it can makes my Moondrop CHU 2 sounds holographic so there's that.

Separation & Positioning is very good. While the Q15 sound presentation is smooth, effortless, liquidy, and did not demand your attention, you can easily pinpoint which sound is playing and where its position very easily.

Output Power is very powerful, with desktop mode enabled, you get 1600mw @32ohm,
with desktop mode disabled, you get 1060mw @32ohm.
You can pretty much power whatever you want or even explode an IEM drivers if you want to.

Bluetooth vs USB
I do noticed a bit of depth is lose with usage of bluetooth, but in exchange for a very convenient way of handling the DAC, I prefer to use bluetooth compared to stacking my phone to the DAC, but hey for me the Q15 is still winning in this situation, because it is very versatile, you can have maximum depth and information using wired connection such as when using it with your desktop devices.

3.5mm vs 4.4mm
Obviously there is more power with the 4.4mm, tonality wise it sounds similar, but try use 4.4mm if possible, it has superior micro separation and stage size with it.

Comparation

FiiO Q5S
Same prices, the Q15 is the direct successor of the oldie Q5S. Q15 pretty much beats the Q5S in all aspects possible and that is a very good thing !
One thing that's missing from the Q15 is the modular amp module system, but hey, I guess you didn't need it if the one that available is already very good.

Cayin RU7 & Hiby FC6
Both RU7 and FC6 are priced at around $300. What you get by spending $100 more?
You get A LOT actually.

You get that same analogue sound characteristic, better technicalities, bluetooth, battery, desktop mode, phone mode, more power and an overall more versatile devices.

One thing that Q15 doesn't have is compactness, both RU7 and FC6 is very small compared to the Q15, but for me with its bluetooth capabilities of the Q15,that loss of compactness is no problem since I got more features and better sounds out of my devices.

Conclusion

Q15 is a very versatile devices that can be used in all kinds of scenario, and I can whole heartedly recommend the Q15 for its asking price.

Portable use? Just use bluetooth, it's that simple.
You want to use it as your desktop DAC? Just flip the Desktop Mode and plug it to your PC.
Not only that, the Q15 also sounds superb in my opinion that blew my minds away.

Now you only need to spend $400USD to get this kinds of musical experiences.
It's a bit crazy if we look into perspective on how times & technologies developed.

That's all from me for now,
thanks for reaching this far !

Just in case you understand Bahasa Indonesia or you're Indonesian, you can watch the video review of this device here


-littlenezt.