Many thanks to Brainwavz for the BLU-100 review sample!
http://brainwavzaudio.com/blu100.html
Brainwavz BLU-100 is a Bluetooth earphone compatible with Bluetooth version 4.0 with aptX for lower latency and better quality audio. Looking at the size of BLU-100 that is approximately about the same size as UE TripleFi 10, and knowing that it houses a rechargeable battery, Bluetooth receiver, DAC, headphone amplifier, and an 8mm dynamic driver, I didn't expect much of its performance. After fully charged the battery, paired it with my phone, wow! It sounds good! Better than what I expected from such a miniature battery powered system.
Before going into details, here is the summary of my observation when using Brainwavz BLU-100:
Pros:
Very good sound quality for the size and price category.
Relatively small size with good fit and comfort.
Decent battery life from such a small battery.
Cons:
Poor Bluetooth receiver sensitivity.
Placement of charging LED indicator is obscured and difficult to see.
Battery:
Base on my observation:
Continuous usage: approximately 3.5 - 4.0 hours
Charging time: approximately 1 hour
Suggestions for improvements:
Bluetooth receiver sensitivity.
Better placement of charging LED indicator.
USB charging port to be moved to the remote control part. This way the earphone still can be used while charging, and doesn't look awkward.
Sound Quality
BLU-100 surprised me with its sound quality. I didn't expect such a small battery and amplifier housed in relatively small earphone housing could sound quite powerful with pretty good dynamic. BLU-100 manages to produce pretty good and decent bass, with good bass punch and body, and decent sub bass extension. Bass is quite snappy and has good speed. I would say the bass power and quality is almost as good as connecting Xiaomi Piston 2 directly to my Galaxy S4 smartphone. In fact, BLU-100 is a little punchier than Xiaomi Piston 2. Quite impressive considering the size and price of the whole system.
Overall tonality is quite balanced. No annoying peaks and dips in the frequency response. Sound signature is best described as balanced and fun. I love good quality bass, and BLU-100 bass is satisfying enough for me, enough punch and power from such a small amp and battery, and most important, bass doesn't sound bloated. Treble has good sparkle and clarity without touching sibilant, and in good balanced with the midrange. My regular test songs are mostly audiophile recordings, some pops, jazz, and classical, no sibilant issue so far. Midrange has good clarity, and never sounded muffled or muddy. Well, not the smooth and highly refined kind of midrange, but I would say the midrange is pretty good and enjoyable, without any annoying coloration. Overall tonality is quite natural, not warm nor analytical. I have no complaint on the tonality, in fact, I quite like it. Bass, midrange, and treble are in good balance. Purist might think it is a little bassy, but that's the level of bass that I consider natural and lively. To me flat sounding bass doesn't sound natural.
Overall clarity is good, which is a must for phone call, but clarity is not over emphasized. Detail is pretty good, even with complex music BLU-100 manages to resolved decent level of detail. Overall sound quality is very good for an IEM at this price point, musical and engaging, with good balanced tonality. Considering the price, I would give 4.5 stars for the sound quality.
Microphone quality on the other hand is just average. Not outstanding, but not bad either. Good enough to make phone call, but in many cases, in a not so quiet environment, we need to bring it closer to the mouth for clearer reception.
Features & Operation
Power On, Power Off, and Bluetooth pairing indicator is by voice announcement through the earphone. Bluetooth pairing is easy and straight forward, tested with Samsung Galaxy S4 and ASUS Zenfone 5. Battery life is decent at around 3.5 hours of continuous usage. Charging using 1A or 2A charger is pretty quick, only takes around 1 hour to fully charge the battery. But LED indicator for charging is very small and obscured in the remote control housing. This is something to be improved; it is rather difficult to see the charging LED.
I suggest to move the USB charging port to the remote control part (control buttons and microphone part), rather than on the back side of the right earphone. When the battery flat, but we need to use the earphone while charging it using a portable battery, it looks awkward and uncomfortable to have USB charging cable sticking out from the earphone. But when the USB charging cable is connected to the remote control case, it is a much better and comfortable setup.
My main concern is the Bluetooth receiver sensitivity which is quite poor in my experience. I got Bluetooth signal cut-off quite often in daily general scenarios. Even in simple scenario of placing my mobile phone in my jeans front pocket, then walk for about 500 meters (which I do daily), in average I experienced cut-off more than 5 times, which is quite annoying. Other scenario, when mobile phone is on a desk and I work around the desk, Bluetooth signal cut-off also happens once and a while. I don't have other similar size Bluetooth earphone to be compared with, only Creative Hitz WP380 Bluetooth headset which is a larger on-ear headset. Using Creative WP380 on similar scenarios, I seldom experienced any Bluetooth signal cut-off. Especially for walking, where the mobile phone is relatively close to the Bluetooth headphone, I never experienced any signal cut-off when using WP380.
I like the balance and fun sound character of BLU-100, and would easily give it an overall rating of 4.5 stars for it, considering the size and price, but the poor Bluetooth receiver sensitivity in my opinion is quite annoying. Because of the poor Bluetooth sensitivity, I rate it 3.5 stars. I hope Brainwavz would improve it in the next model of Brainwavz Bluetooth earphone.
Beside the suggestion to improve the Bluetooth receiver sensitivity for the new model, since the quality of the dynamic driver and the shell design is very good, I would like to suggest to Brainwavz to develop a regular wired IEM using the same 8mm dynamic driver and smaller metal shell. By removing the active components and batteries, probably Brainwavz could cut the cost by more than half, and priced the IEM at the budget IEM category. If the sound quality of the new budget IEM is similar than BLU-100, I believe it could hit the market and potentially become a giant killer IEM.
Specifications:
Drivers: Dynamic 8mm
Rated Impedance: 30Ω closed Dynamic
Frequency Range: 20Hz ~ 20kHz
Sensitivity: 110 dB @ 1 mW
Bluetooth: 4.0
Codec: aptX™
Max Distance: 10mt(30ft)
Battery: 60mAh
Playtime/Standby: 4hrs/100hrs
Charge Time: 2hrs(USB)
Noise Cancellation: CVC echo/noise
Voice Prompt: Yes
Profiles: HFP HSP A2DP
Pairing: Dual Pairing
In-Line: Remote/Mic
Cable length from left driver to right driver: 60 cm
Can be purchased from:
Brainwavz BLU-100 Sport Bluetooth 4.0 APTX Headphones
http://brainwavzaudio.com/blu100.html
Brainwavz BLU-100 is a Bluetooth earphone compatible with Bluetooth version 4.0 with aptX for lower latency and better quality audio. Looking at the size of BLU-100 that is approximately about the same size as UE TripleFi 10, and knowing that it houses a rechargeable battery, Bluetooth receiver, DAC, headphone amplifier, and an 8mm dynamic driver, I didn't expect much of its performance. After fully charged the battery, paired it with my phone, wow! It sounds good! Better than what I expected from such a miniature battery powered system.
Before going into details, here is the summary of my observation when using Brainwavz BLU-100:
Pros:
Very good sound quality for the size and price category.
Relatively small size with good fit and comfort.
Decent battery life from such a small battery.
Cons:
Poor Bluetooth receiver sensitivity.
Placement of charging LED indicator is obscured and difficult to see.
Battery:
Base on my observation:
Continuous usage: approximately 3.5 - 4.0 hours
Charging time: approximately 1 hour
Suggestions for improvements:
Bluetooth receiver sensitivity.
Better placement of charging LED indicator.
USB charging port to be moved to the remote control part. This way the earphone still can be used while charging, and doesn't look awkward.
Sound Quality
BLU-100 surprised me with its sound quality. I didn't expect such a small battery and amplifier housed in relatively small earphone housing could sound quite powerful with pretty good dynamic. BLU-100 manages to produce pretty good and decent bass, with good bass punch and body, and decent sub bass extension. Bass is quite snappy and has good speed. I would say the bass power and quality is almost as good as connecting Xiaomi Piston 2 directly to my Galaxy S4 smartphone. In fact, BLU-100 is a little punchier than Xiaomi Piston 2. Quite impressive considering the size and price of the whole system.
Overall tonality is quite balanced. No annoying peaks and dips in the frequency response. Sound signature is best described as balanced and fun. I love good quality bass, and BLU-100 bass is satisfying enough for me, enough punch and power from such a small amp and battery, and most important, bass doesn't sound bloated. Treble has good sparkle and clarity without touching sibilant, and in good balanced with the midrange. My regular test songs are mostly audiophile recordings, some pops, jazz, and classical, no sibilant issue so far. Midrange has good clarity, and never sounded muffled or muddy. Well, not the smooth and highly refined kind of midrange, but I would say the midrange is pretty good and enjoyable, without any annoying coloration. Overall tonality is quite natural, not warm nor analytical. I have no complaint on the tonality, in fact, I quite like it. Bass, midrange, and treble are in good balance. Purist might think it is a little bassy, but that's the level of bass that I consider natural and lively. To me flat sounding bass doesn't sound natural.
Overall clarity is good, which is a must for phone call, but clarity is not over emphasized. Detail is pretty good, even with complex music BLU-100 manages to resolved decent level of detail. Overall sound quality is very good for an IEM at this price point, musical and engaging, with good balanced tonality. Considering the price, I would give 4.5 stars for the sound quality.
Microphone quality on the other hand is just average. Not outstanding, but not bad either. Good enough to make phone call, but in many cases, in a not so quiet environment, we need to bring it closer to the mouth for clearer reception.
Features & Operation
Power On, Power Off, and Bluetooth pairing indicator is by voice announcement through the earphone. Bluetooth pairing is easy and straight forward, tested with Samsung Galaxy S4 and ASUS Zenfone 5. Battery life is decent at around 3.5 hours of continuous usage. Charging using 1A or 2A charger is pretty quick, only takes around 1 hour to fully charge the battery. But LED indicator for charging is very small and obscured in the remote control housing. This is something to be improved; it is rather difficult to see the charging LED.
I suggest to move the USB charging port to the remote control part (control buttons and microphone part), rather than on the back side of the right earphone. When the battery flat, but we need to use the earphone while charging it using a portable battery, it looks awkward and uncomfortable to have USB charging cable sticking out from the earphone. But when the USB charging cable is connected to the remote control case, it is a much better and comfortable setup.
My main concern is the Bluetooth receiver sensitivity which is quite poor in my experience. I got Bluetooth signal cut-off quite often in daily general scenarios. Even in simple scenario of placing my mobile phone in my jeans front pocket, then walk for about 500 meters (which I do daily), in average I experienced cut-off more than 5 times, which is quite annoying. Other scenario, when mobile phone is on a desk and I work around the desk, Bluetooth signal cut-off also happens once and a while. I don't have other similar size Bluetooth earphone to be compared with, only Creative Hitz WP380 Bluetooth headset which is a larger on-ear headset. Using Creative WP380 on similar scenarios, I seldom experienced any Bluetooth signal cut-off. Especially for walking, where the mobile phone is relatively close to the Bluetooth headphone, I never experienced any signal cut-off when using WP380.
I like the balance and fun sound character of BLU-100, and would easily give it an overall rating of 4.5 stars for it, considering the size and price, but the poor Bluetooth receiver sensitivity in my opinion is quite annoying. Because of the poor Bluetooth sensitivity, I rate it 3.5 stars. I hope Brainwavz would improve it in the next model of Brainwavz Bluetooth earphone.
Beside the suggestion to improve the Bluetooth receiver sensitivity for the new model, since the quality of the dynamic driver and the shell design is very good, I would like to suggest to Brainwavz to develop a regular wired IEM using the same 8mm dynamic driver and smaller metal shell. By removing the active components and batteries, probably Brainwavz could cut the cost by more than half, and priced the IEM at the budget IEM category. If the sound quality of the new budget IEM is similar than BLU-100, I believe it could hit the market and potentially become a giant killer IEM.
Specifications:
Drivers: Dynamic 8mm
Rated Impedance: 30Ω closed Dynamic
Frequency Range: 20Hz ~ 20kHz
Sensitivity: 110 dB @ 1 mW
Bluetooth: 4.0
Codec: aptX™
Max Distance: 10mt(30ft)
Battery: 60mAh
Playtime/Standby: 4hrs/100hrs
Charge Time: 2hrs(USB)
Noise Cancellation: CVC echo/noise
Voice Prompt: Yes
Profiles: HFP HSP A2DP
Pairing: Dual Pairing
In-Line: Remote/Mic
Cable length from left driver to right driver: 60 cm
Can be purchased from:
Brainwavz BLU-100 Sport Bluetooth 4.0 APTX Headphones