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 patented 'True DSD' technology and AKM AK4490 DAC chip, the CMA400i has the capability to process all DSD signals without any PCM conversion.


  • Finish: Black
  • Chassis Materials:  special CNC tooled Aluminum 
  • Dimension:279mm[W]×189mm[D]×55mm[H]
  • Weight:84.65oz (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: A 6.35mm standard headphone jack;  A 4-PIN full-balanced headphone jack;  A 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)

Authorised Retail Partners

HiFi Headphones
Igloo Audio
Advanced MP3 Players
Audio Venue
Highend Headphones
SSP (inc VAT) £ 799.00
Code QU-CMA400I
EAN 6970011520184