Questyle M15 - Mobile DAC/ Headphone Amplifier HiFi

Questyle M15

$249.00 $211.00

Questyle M15 was born: it distills all of Questyle’s expertise and technologies into an amazingly powerful compact mobile DAC & AMP.

  • Two independent CMA SiP modules
  • Four total amplification circuits
  • Greater dynamics, Richer details
  • Supports both 3.5mm and 4.4mm
  • CNC machined aluminum housing
  • Stunning transparent cover on top

Don’t be fooled by its small size. The M15 offers uncompromising performance and best-in class fidelity, giving you the ultimate portable audio experience.

Set: USB-C in Box

  • USB-C in Box
  • With Extra Lightning Adapter (USB-C to Lightning cable)
Will not ship until [19041994]
$249.00 $211.00
Out of stock

Frequently Bought Together

Total price: $278.90 $236.00
  • This item: Questyle M15 $249.00 $211.00
  • Protective Cover for Questyle M15 $29.90 $25.00

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 THD + N: 0.0003%
DAC Capability: PCM:PCM: 32kHz – 384kHz (16/24/32Bit) DSD: DSD64(1Bit 2.8MHz) , DSD128(1Bit 5.6MHz), DSD256(1Bit 11.2MHz) DAC: ESS flagship USB DAC chip ES9281AC
Output Interface: 3.5mm standard headphone jack x1 4.4mm balanced headphone jack x1 Material: CNC machined aluminum
Output Power: 3.5mm:RL=300Ω,Po=11.97mW, Vout(Max)=1.895Vrms,THD+N=0.00045% 4.4mm:RL=300Ω,Po=22.60mW, Vout(Max)=2.624Vrms,THD+N=0.00057% Color: Black
Frequency Response: ±0.1dB(20Hz-20kHz) Size: 61.8[L] X 27.2[W] X 12[D](mm)
  • 1 * M15
  • 1 * USB-A to USB Type-C cable,
  • 1 * Type-C to Type-C cable
  • 1 * Instruction manual
  • 1 * Guarantee card

Welcome to the world of truly mobile HiFi

In this complex world, we pursue simplicity.
Don’t be fooled by its small size. The M15 offers uncompromising performance and best-in-class fidelity,
giving you the ultimate portable audio experience.


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 mazingly powerful yet compact mobile DAC & amp.

Metal Housing

Transparent Cover

Minimalist on the Outside, Stunning on the Inside

Your HiFi, Anytime, Anywhere

Two Independent SiP

Greater Dynamics, Richer Details

The M15 contains two of Questyle’s patented CMA (Current Mode Amplification) SiP modules, for a total of four CMA ampengines. This quadruple drive amplification circuitry gives anoutstandingly strong output that can drive almost anyheadphone. Questyle’s Current Mode Amplifiers arecharacterized by their small footprint, low voltage operation,and minimal power consumption. Current amplification has anaturally low impedance, affording the M15 a bandwidth up to1MHz, distortion as low as 0.0003%, and the ability toreproduce every detail hidden deep within any track.

3.5mm TRS / 4.4mm TRRS outputs

Manual Gain Adjustment

With its four CMA amp circuits, the M15 supports bothunbalanced (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 theconnected 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 itsincredibly low noise floor, the M15 allows all the details of yourmusic faithfully ring true.

Background noise of M15 is lower than -125dB

FFT @1kHz@48kHz(SR)24bit, @3.5mm Po=5.9mW, RL=300ΩData from Audio Precision AP2722

Background noise of M15 is lower than -130dB

FFT @1kHz@48kHz(SR)24bit, @4.4mm Po=23.21mW, RL=300ΩData from Audio Precision AP2722

Top-of-the-Line Decoding

World-Class Digital Analog

The M15 features the highly acclaimed ESS ES9281AC flagshipDAC, 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.

High-Efficiency Power Management

The M15 features TOREX High-Efficiency Power Management, which could bring out low power consumption, no overheating , longer battery life, longer playback.

The M15 Connects you to the Streaming Era 

The Easiest Way to Enjoy any Hi-Res Lossless Library

The M15 supports almost all music streaming platforms worldwide, including Apple Music, Tidal, QQ Music, among others. It fully supports and decodes ALAC, FLAC, MQA, andother lossless formats.

Unparalleled ease of use, Plug-and-Play

M15 is fully compatible with Android 5.1 and above systems on popular smart phones and tablets.
For PC, it supports Mac OS and Windows 10 version 18.3 and above with no additional driver installation required.

Lap Top


Mobile Phone

Upgrade your Cables, too

Order custom-made premium cables from Questyle for connecting your HiFi system and specialized equipment…
and achieve the lowest possible interference.
Our professional-grade cables feature Mogami NEGLEX oxygen-free-copper cores,
Neutrik 24K gold-plated pins, and hand-braided nylon sleeves.

3.5mm to RCA

4.4mm to XLR

Note: These professional-grade cables are not included with the M15.Please purchase separately, according to the needs of your setup.

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Questyle M15

USB-C in Box
USB-C in Box
$249.00 $211.00