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Questyle's CMA400i Balanced Headphone Amplifier & USB DAC

Availability: In stock

- Only 1 left

  • High-resolution DAC, headphone amp and pre-amp combination

  • True DSD technology and AKM AK4490 DAC chip

  • Chassis made of aircraft-grade Aluminium 6063 and manufactured by Foxconn

  • Support for the highest quality audio file formats

  • Carefully selected high-end components used throughout

Questyle's CMA400i Balanced Headphone Amplifier & USB DAC

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Questyle CMA400i

Questyle's CMA400i is a hybrid digital-analogue converter and headphone amplifier rolled into one. It is the most affordable of the CMA 'Current Mode Amplifier' series to-date. Complete with Questyle's 'True DSD' technology and high-end DAC chip, the CMA400i has the capability to process all DSD signals without any PCM conversion.

CMA400i can drive headphones in full-balanced mode as it features four groups of pure Class A Current Mode amplification circuits, and supports a 4PIN balanced XLR output, a 2.5mm balanced headphone jack and a 6.35mm standard headphone jack. In addition, the new design of Gain Control switch at the bottom of the chassis benefits CMA400i with perfect driving power for different headphones.

CMA400i 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.

Exceeds all expectation.


Questyle CMA400i




  • Chassis Materials: Special CNC tooled Aluminum
  • Dimensions: 279mm×189mm×55mm
  • Weight: 2.4kg
  • Working Status: Pure Class A
  • Voltage: 100-120V or 220-230V, switchable
  • Power Consumption: 17W

Preamp/DAC Section

  • THD+N: RCA:< 0.0009%; XLR:< 0.0009%
  • SNR: RCA: >110dB; XLR: >113dB (non-weighting)
  • USB Type B Input: 44.1K-384K/16-32Bit PCM and DSD native, DSD64 / 128 / 256
  • Digital Interface: SPDIF input and output, OPT input; Support 44.1K-192K / 24Bit PCM

Headphone Section

  • Output Interface: 6.35mm standard headphone jack; 4-PIN full-balanced headphone jack; 2.5mm full-balanced headphone jack
  • Max Output Power (Po): 106mW@300Ω; 980mW@32Ω (normal headphone jack); 418mW@300Ω; 3920mW@32Ω (balanced headphone jack)
  • THD+N: 0.0013%@1kHz, Po=100mW, 300Ω; 0.0016%@1kHz, Po=50mW, 32Ω
  • Frequency Response: DC-100kHz (+0, -0.7dB); DC-600kHz (+0, -3dB)


Product TypeDAC / Headphone Amplifier
Feature KeywordHi-Fi, Studio, TV
Recommended UseHi-Fi, Studio, TV
Manufacturer Warranty2 Years
Included AccessoriesNo
Part NumberCMA400I

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Customer Reviews

by Joakim Olsson on 23/08/2017
Very nice product!

Great detailed & smooth sound. Unit feels very sturdy and premium, and good looks (imo).

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