Questyle M12 | Portable DAC and Amp-Bloom Audio
Questyle M12 | Portable DAC and Amp-Bloom Audio
Questyle M12 | Portable DAC and Amp-Bloom Audio

Questyle M12 | Portable DAC and Amp

Sale price$139.00


Questyle M12 delivers power and precision in a portable package

  • High resolution portable DAC
  • Small form factor and simple design
  • Perfect for enhancing your mobile audio experience and getting the most out of your IEMs or sensitive headphones

Bloom's Take

In the $100 range, you just can't beat the combination of detail, resolution and musicality that the Questyle M12 provides. Couple that sound with the form factor and simplicity and you have one of the best options on the market for starting your portable HiFi journey.

M12 · Start Your Mobile Hi-Fi Journey

To greet mobile lossless music in the 5G era, Questyle released the M12 in 2021, a mobile Hi-Fi headphone amplifier with DAC, which integrates
Questyle’s core technology and carries on the gene of mobile Hi-Fi feature. M12 allows all mobile phone users to break through limitations of technology, cost and size of the audio circuit integrated into mobile phones, and feel free to enjoy lossless music from streaming anytime in any place.

Now, let M12 take you to your mobile Hi-Fi journey!

Sound by Questyle

The patented “Current Mode Amplification” technology is the fundamental difference between Questyle’s hardware and other terminals. The amplifier is to a headphone system what the engine is to a car. As the “engine” amplifier, it has a crucial impact on the improvement of sound quality. Benefiting from our self-developed SiP Current Mode Amplifier module, M12 is free from the power limit of operational amplifier chips and provides a totally different sound performance with the ultra-low distortion level of 0.0003%. It has ultra-high current output power and excellent sound control. It will fully dig out the potentiality of your headphones.

Questyle M12

Smart Detection of Impedance Automatically self-adjust to fit your headphones
​When M12 is plugged into a headphone, the built-in smart detection system will start automatically to detect the headphone impedance and self-adjust to fit the headphone. Just like the auto shift of a car, M12 will self-adjust to high power level to drive high-impedance headphones with the Gain indicator showing red light, providing excellent dynamic performance. When driving low-impedance and high-sensitivity earphones, M12 will reduce the output level and accurately match their impedance, with the Gain indicator showing green light for low impedance.

Questyle and ESS team spent two years developing the mobile headphone amplifier with DAC and it will perform better than expected. The logo of both Questyle and ESS are put on M12 in order to mark the first cooperation between the two companies. ES9281AC, the ESS flagship USB DAC chip built in M12, has decoding capability up to PCM 384kHz/32bit and DSD256. Whether it is the deepest bass sound of the organ in European cathedrals or the strongest bass and guitar melodies in hard rock, M12 will always be able to capture the details buried deep in the soundtrack.

Excellent Audio Performance

  • FFT @1kHz sine wave Po=5mW
  • Data from Audio Precision AP2722
  • Background noise of M12 is lower than -130dB
  • Frequency response curve: 0dBFS 192k/24Bit high
  • sampling rate files Data from Audio Precision AP2722
  • M12 achieves real Hi-Res with the ultra-wide frequency range
  • more than 20kHz

Support MQA Decoding

MQA (Master Quality Authenticated): Questyle M12 includes MQA Renderer technology, which can connect to an MQA Core signal and complete the final unfold of an MQA file. The M12 LED glows magenta to indicate that the unit is rendering an MQA stream or file. This delivers the final unfold of the MQA file.

Questyle M12

MQA is a new technology which removes digital distortion and packages audio streams efficiently into files that are small enough to stream. It can be integrated into your audio products in a very smart way and achieves the highest quality playback. MQA delivers the original sound, in the highest quality, using less data, and authenticates provenance.

Perfect Compatibility

Plug and play, enjoy your Hi-Fi journey
M12 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.


Material: CNC machined aluminum
Color: Black / Silver
Size: 51[L] X 16.5[W] X 8.1[D] (mm)

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 of M12:
PCM: 32kHz – 384kHz (16/24/32Bit)
DSD: DSD64(1Bit 2.8MHz) , DSD128(1Bit 5.6MHz), DSD256(1Bit 11.2MHz)

Output Power:
Built-in smart detection circuit will automatically self-adjust the output power to fit different
impedance of headphones.
When the detected impedance is less than 70Ω, M12 will self-adjust to low gain output.
When it is more than 70Ω, M12 will self-adjust to high gain output.
When it is more than 600Ω, M12 will automatically switch to 2Vrms line out.

Frequency Response: ±0.1dB(20Hz-20kHz)
THD+N: 0.0003%
DAC: ESS flagship USB DAC chip ES9281AC

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Customer Reviews

Based on 6 reviews
Chuck V.
Rich, musical, and extremely clean sounding DAC/Amp

This review will compare the Questyle M12, Shanling UA3, and Dragonfly Black.

All are on the warmer side and all are very enjoyable.

The Questyle M12 is a strangely small, but also strangely powerful unit. There must be something to the idea of amplifying current rather than voltage. Although the M12 produced only 27 mW at 32 ohms versus the UA3's 211 nW at 32 ohms, in balanced mode, the M12 is very, very noticeably more powerful.

Thanks to the peculiarities of Tidal's desktop app and Windows 10, I have accidentally blasted myself with the full power of the M12. I would not recommend this as it is truly painful. I believe that if the same thing happened with the UA3 or Dragonfly, it would be uncomfortable, but no where near as loud.

The UA3 has a more loose and full lower end and treble seems to taper off a little more. It produces a very nice soundstage, particularly in balanced mode.

Instruments have a little more body on the UA3 than the M12.

The Dragonfly Black also has a fuller and looser low end, with less treble energy than the UA3. There is a bit of compression in the midrange. The soundstage is not particularly holographic.

The M12's sound is characterized by an extraordinarily taught presentation (not hard, but taught, like a guitar string) that is extremely clean and detailed. Bass, midrange, and treble all sound far more clean and balanced, with incredible levels of detail.

As someone who is treble-sensitive, I am impressed that Questyle managed to create an amp that highlights treble without ever veering into sibilance in any way.

It is absolutely possible to pick out individual instruments and locate them in the soundstage. The taughtness of the amp's delivery is hard to describe, but the amp just never seems to struggle and the sound is very alive.

I am primarily using them with the Sennheiser 58x and Koss Porta Pro with Yaxi pads, but I have also run a pair of Sennheiser 420 cans that I bought in the late 1970s. Those are 600 ohm and do not seem to be very efficient. Most amps do not handle them well.

The M12 played musically through all of them and without even a hint of strain. The Senn 420s have never sounded so good and I had no problem whatsoever driving them.

Treble on the 58x and Porta Pros seems to be more emphasized, but always in a good way. Both are excellent pairings. The M12 plus the Porta Pros/Yaxi pads make a fun and engaging portable rig at a bargain price.

On my phone, I am at about 75% power when playing the M12 loudly on the 58x, but on a Windows laptop I keep the volume at about 20-25%.

The UA3 gets noticeably warmer than the M12, which produces almost no heat, much like the power-sipping Dragonfly Black.

The M12 does use battery power at a higher rate than the UA3 or Dragonfly, which is to be expected given its output abilities.

The only other criticisms that I have are that the M12 makes a small thump at power up and it works best with the included USB-C cables. Using an Anker series 5 USB-C resulted in the amp sometimes disconnecting from my phone when moving around. The included cable almost clicks into place and seems more stable.

Would I purchase the M12 again? Yes, absolutely. Questyle managed to balance detail with warmth and musicality. It has a unique clarity. I enjoy all three of these amps, but I am using the M12 more than the other two.

Highly recommended!

Lorenzo Savona
Great sounding dac

Paired with campfire audio iems the sound is open and full. Great soundstage. Gives new life to really good headphones making them better😊

Randy Brissey
My Best Sounding Dongle DAC

I spent a month doing research for a lite weight better sounding system for a on the go music rig. After settling on (and purchasing) the top four contenders it became obvious that the Questyle M12 was the winner. It adds to the listening experience without substantial battery usage and bulk.

Vence Lao
Great Audio Equipment

It is very compact and is a very clean dac/amp for mid-range to entry high-end headphones. I used HD 650 S and it get very loud without distortion. Great buy!

William Ribish

Questyle M12 | Portable DAC and Amp

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