Questyle CMA 400i, inheriting the state-of-the-art technology of Questyle Golden Reference System, is visually impressive and mysterious for its black and sandblasted chassis, and the amber light of LED indicators. CMA400i can be placed straight with a specially designed stand. Built with four groups of pure Class A Current Mode amplifiers and all discrete circuit, CMA 400i achieves the ultra-low distortion level of 0.0006% and ultra-wide bandwidth up to DC-600kHz(+0,-3dB). The impressive technical performance together with warm and powerful sound makes CMA400i comparable with a high-end headphone amplifier.
– 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 Amplifier Section
– Gain: 7.8dB ( 2.47, standard ) / 0.83dB ( 1.1, low ) – 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; 650mW@32Ω (6.35mm headphone jack) 418mW@300Ω; 1200mW@32Ω (balanced headphone jack) To enhance the reliability of CMA400i, Questyle designed a power-limited circuit used for low impedance, the output power is limited to 410mW @32Ω（6.35mm headphone jack） 430mW @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)
CMA400i integrates digital and analog decoding, front-stage amplification and headphone amplifier, which is suitable for multiple applicable scenes to create an auditory space where sound is adjacent to the environment.
CMA400i is visually impressive and mysterious for its black and sandblasted chassis, and the amber light of LED indicators.It can be placed straight with a specially designed stand, which is not only space saving but also eye-catching for its statue-like structure under light.
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.
Current Mode Amplifier
CMA400i is built with four groups of pure Class A Current Mode amplifiers and all discrete circuit, which achieves the ultra-low distortion level of 0.0006% and ultra-wide bandwidth up to DC-600kHz(+0,-3dB). The impressive technical performance together with warm and powerful sound makes CMA400i comparable with a high-end headphone amplifier.
CMA400i can drive headphones in full-balanced mode as it features four groups of pure Class A Current Mode amplification circuits, and supports a 4-PIN 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.
Full-balanced Headphone Jack
4 - PIN
Full-balanced Headphone Jack
Standard Headphone Jack
True DSD Processor
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.
Nichicon FG capactors
DALE military resistors
CMA400i’s chassis is made of aircraft-grade Aluminum 6063,
black and sandblasted chassis, which ensures that CMA400i remains at 55℃ even works in pure Class A status for long time.
Exquisite chassis edge, with elegant edge line,
clock calibration volume knob, amber light feeling of LED indicators,
all details telling Questyle strict requirement on manufacturing.
Each panel passed fine machining by CNC device,
tolerence under ±0.02mm, volume knob tolerence under ±0.005mm,
processed with top level CNC standard.
Highly Adaptable with Various Audio Devices
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Build your HiFi System
Connect to your devices and see what happens next!
Build a PC High-End System
When connecting to a computer, it is only responsible for sending data. So, everything related to sound quality will be guaranteed by CMA400i, no matter it is a song, a film or a game.
Match CMA400i with Traditional Digital Sources and Active Speakers
The performance of a traditional Hi-Fi system can be much improved by CMA400i because of its completely separate DAC with optical and coaxial interfaces. Another distinctive feature of CMA400i is switching between “Headphone Amplifier” and “Pre-amplifier” by the “Function” switch on the front panel. In DAC mode, CMA400i supports RCA and XLR pre-amp outputs which can be selected by the ADJ/FIX switch on the rear panel.