Inspiration
In this complex world, we pursue simplicity.
The era of 5G has brought music streaming from smart devices fully into the mainstream. As more and more music platforms launch lossless audio streaming services, mobile hi-res audio has changed from a neat gimmick into a real and growingly popular way to enjoy high-fidelity music. However, it’s often impractical to use traditional HiFi audio equipment with your smartphone on-the-go, due to size and power consumption.
To solve this problem, the M15 was born: it distills all of Questyle’s expertise and technologies into an amazingly powerful yet compact mobile DAC & amp.
Don’t be fooled by its small size. The M15 offers uncompromising
Two independent CMA SiP modules
Four total amplification circuits
Greater dynamics, richer details
The M15 contains two of Questyle’s patented CMA (Current Mode Amplification) SiP modules, for a total of four CMA amp engines. This quadruple drive amplification circuitry gives an outstandingly strong output that can drive almost any headphone. Questyle’s Current Mode Amplifiers are
characterized by their small footprint, low voltage operation, and minimal power consumption. Current amplification has a naturally low impedance, affording the M15 a bandwidth up to 1MHz, distortion as low as 0.0003%, and the ability to reproduce every detail hidden deep within any track.
3.5mm TRS / 4.4mm TRRS outputs
Manual gain adjustment
Compatible with even more headphones
With its four CMA amp circuits, the M15 supports both unbalanced (3.5mm TRS) and balanced (4.4mm TRRS) outputs. It also has manual gain adjustment via the slider on the side, which makes it easy to choose high/low gain depending on the connected headphone, speaker, or HiFi system.
Impossibly low noise floor
Complete sonic immersion
Purest sound, anytime, anywhere
Only a black background can reflect rich color. With its incredibly low noise floor, the M15 allows all the details of your music faithfully ring true. In testing, the M15 was able to achieve a noise floor of -130dB.
FFT @1kHz@48kHz(SR)24bit, @3.5mm Po=5.9mW, RL=300Ω
Data from Audio Precision AP2722
Treat your senses to true lossless sound
When playing audio, the data status indicator will illuminate one of the following colors:
- Green indicates the audio sample rate is 48kHz or less.
- Red indicates hi-res lossless playback. (Hi-res lossless refers to PCM 88.2kHz~384 kHz, or DSD64~DSD256.)
- Meganta indicates the M15 is performing the final unfold of an MQA Core stream.
World-class digital to analog conversiont
ESS ES9281AC DAC offers
top-of-the-line decoding
The M15 features the highly acclaimed ESS ES9281AC flagship DAC, which can handle up to PCM384kHz/32bit and DSD256.
It’s almost inconceivable that something as small as the M15 can process and reproduce such demanding audio formats.
Unparalleled ease of use
Plug-and-play, no drivers needed
Unparalleled ease of use
Plug-and-play, no drivers needed
- Operating System Required:
Android phone and pad: Android 5.0 and above
PC:Win10 1803 and above
Apple cellphone: iOS (You need to buy an OTG cable for Lightning to Type-C.)
Apple computer: mac OS - DAC Capability:
PCM: PCM: 32kHz – 384kHz(16/24/32Bit)
DSD: DSD64(1Bit 2.8MHZ),DSD128(1Bit 5.6MHZ)DSD256(1Bit 11.2MHz) - Output Interface:
3.5mm standard headphoneiack x1
4.4mm balanced headphone jack x1 - Output Power:
3.5mm:RL=300ff,Po=11.97mW,Vout(Max)=1.895Vrms,THD+N=0.00045%
4.4mm:RL=300ff,Po=22.60mW,Vout(Max)=2.624VrmsTHD+N=0.00057% - Frequency Response: 30.1dB(20Hz-20kHz)
- THD +N: 0.0003%
- DAC: ESS flagship USB DAC chip ES9281AC
- Material: CNC machined aluminum
- Color: Black
- Size: 61.8[L]X 27.2[W]X12[D](mm)
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