Questyle CMA Twelve DAC Headphone Amp Open Box

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CMA Twelve, the new flagship DAC / Headphone Amp from Questyle, inherits their classic desktop design format and outperforms its peers once again. It marks the anniversary of Questyle’s revolutionary Current Mode Amplification technology, invented 12 years ago.


The elegant lines and laser etched text for status and volume echo the professional “genes” of the Questyle family. Serious thought for every detail is revealed with the amber glow of each LED indicator against the black or gold, sandblasted chassis.

Questyle CMA Twelve Front controls

Distinctive Questyle Design

Only when you see it will you truly understand the exquisite finish and design detail achieved between Questyle and their manufacturing partner, Foxconn, setting new benchmarks in technological standards. The chassis of the CMA Twelve has very high efficiency for heat dissipation, which ensures it will work with absolute stability in pure Class A, keeping the temperature at 45 degrees.

Resonance Control

Mechanical vibration will affect audio signal processing and the resulting sound. To avoid resonance, the CMA Twelve chassis is formed from 10mm-thick aircraft-grade Aluminum 6063, with high precision machining techniques of ±0.02mm.

Heat Level

Chassis Thickness

Machining Precision

Questyle CMA Twelve design details


Questyle CMA Twelve circuit board
Current Mode Amplification

Current Mode Amplification

Questyle's patented Current Mode Amplification technology is set apart from other technologies adopted in traditional amplifiers. It will provide users with an experience of being there and listening to the original sound.

BIAS Control

Pure Class A BIAS Control

Questyle's pure Class A BIAS Control system can perfectly drive headphones or speakers of different specifications and easily bring their full abilities to fruition.

Direct Stream Digital

True Direct Stream Digital

CMA Twelve is designed with Questyle patented True DSD technology and AKM AK4490 DAC chip. It processes DSD Signals without any PCM converting and provides True DSD.

PCM384 | DSD256 | 32Bit

Questyle CMA Twelve WIMA capacitors

WIMA capacitors

Questyle CMA Twelve Nichicon FW capacitors

Nichicon FW capacitors

Questyle CMA Twelve resistors

DALE military resistors


Giving Full Performance to Your Headphones

CMA Twelve is designed with four groups of Current Mode amplifiers, exhibiting forceful driving power and an ultra-low distortion level of a mere 0.0005%. Plus the high-performance BIAS Control System, CMA Twelve will give full performance to your headphone or speaker systems and bring you an exceptional listening experience.

Balanced headphones with a 4.4mm connector are a rising trend with many headphone manufactures including Sennheiser, Audio Technica and Sony, launching products with 4.4mm-connections. CMA Twelve is Questyle’s first device to feature the 4.4mm jack and Questyle is committed to support this growing trend.

4 Groups
Current Mode Amplifiers

Ultra-low Distortion

Balanced Headphone Jack

Audio Editing Suite

Serve as A Digital Monitor in Studios

In addition to SPDIF and Optical inputs, the CMA Twelve supports a professional AES input and XLR output. Live recordings can be monitored in real time via the 6.35mm headphone output. Output level matching is user switchable between Studio and Standard mode. In the Studio mode, the power level will increase from 14dBu up to 20dBu instantly, matching it with studio-level professional equipment.

Bringing Out The Sound Quality of Streaming

Digital audio signals from your PC, music server, CD or Blu-ray can be sent to the CMA Twelve via AES, SPDIF, Optical or USB. The core patented technologies of Current Mode Amplification, True DSD and 3x Clock Asynchronous Transmission allow the CMA Twelve to offer outstanding performance from its DAC and pre-amplifier. The specially designed ADJ/FIX switch is used to match with power amplifiers and active speakers.

Standard and Master Versions

There are two versions of CMA Twelve, the first is the CMA Twelve Standard, the other being the CMA Twelve Master. The CMA Twelve Master has a “MASTER” laser etching, and features a ROGERS Ceramic PCB to ensure the ultimate performance for sound quality and in specifications. The finish of both the CMA Twelve Standard and CMA Twelve Master are both available in your choice of Golden or Black.

Press and Reviews

Headphone Guru Review
Headphone Guru

by Gary Alan Barker
Nov. 2018

Headphone Guru 2018 Product of the Year Awards
Headphone Guru

2018 Solid State Amp
Product of the Year


Technical Features

Chassis Material
special CNC tooled Aluminum
12.99” W x 7.87” D x 1.38” H (330mm x 200mm x 55mm)
Working Status
Pure Class A
100-120V or 220-240V (switchable)
Power Consumption
Supported OS
Win XP, Vista, Win7, Win8, Win10 and Mac OS

DAC + Amplifier

4.4 mm balanced headphone jack
4PIN balanced headphone jack
6.35mm headphone jack
Max Output Power (Po)
247mW @ 300Ω; 900mW @ 32Ω(6.35mm headphone jack)
825mW @ 300Ω; 2W @ 32Ω (balanced headphone jack)
0.00070% @Po=100mW, 300Ω
0.00167% @ Po=50mW, 32Ω
Frequency Response
DC-20kHz(+0, -0.4dB)@0dBFS, 24Bit, 192kHz
DC-80kHz(+0, -3dB)@0dBFS, 24Bit, 192kHz
112dB, non-weighting

DAC + Preamp Output

UCB Type B Input:
Support 44.1kHz-384kHz/16Bit-32Bit PCM and DSD Native DSD64, DSD128, DSD256, as well as DSD64, DSD128, DSD256 of DoP format
Digital Input & Output
SPDIF input and output, Optical input, AES/EBU input
Support 44.1kHz-192kHz/16Bit-24Bit PCM
Pre-Amp & DAC Section
Balanced XLR x1 pair, unbalanced RCA x1 pair
STANDARD 14dBu: XLR: 5.084V RCA: 2.549V
STUDIO 20dBu: XLR: 8.887V RCA: 4.475V
[email protected] 20dBu: XLR: minimum at 0.00085% RCA: minimum at 0.00115%
SNR: XLR:>112dB RCA:> 109dB (non-weighting)

Note: FIX/ADJ: Fixed Output Mode or Adjustable Output Mode of the pre-amp.