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Questyle Audio CMA800i DAC Headphone Amplifier

cma800i

Questyle Audio

Moon Audio

Hot New Products,DACs,Amplifiers,Amps, DACs & Gear,Headphones,Home Audio,Premium HiFi Gifts,Holiday Amps, Dacs or Gear Gifts,Questyle Audio ,Amps, DAPs, & Music Players,DACs,

NEW The Questyle Audio CMA800i headphone amplifier section follows Questyle’s patented "Current Mode Amplification" design used in their flagship headphone amplifier, the CMA800R.


The ultra low 0.00026% distortion, ultra wide bandwidth, up to 850kHz (+0, -3dB), and Super-current pure Class A architecture enables the CMA800i’s amplification to be unparalleled among all-in-one & DAC headphone amp models.


"Questyle Audio's Golden Reference system is truly one of the finest headphone systems on the market today, earning a perfect 5/5 Blue Notes in 12 of our 16 categories and never scoring below a 4.0. It is most certainly in rarified air."


EnjoyTheMusic.com review Oct 2016


HomeTheaterReview.com  Jan 2016


Headphone.Guru Review May 2015

$2,499.00
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Description

Details

A World Class DAC section with True DSD

Unlike other DACs that claim DSD support, yet in actuality provide DoP (DSD over PCM), the CMA800i accepts the DSD bit-stream directly from your computer, bypassing your computer’s audio processing and digital volume control as well as the CMA800i’s digital filters, to provide True DSD, the way it was meant to be heard, without requiring expensive difficult to install proprietary connectors.

With DSD over PCM, the DoP breaks up the bit-stream into 16bit packets and compresses them into a PCM data-stream and then uncompresses them at the other end, buffering them, then reassembles into the bit-stream so that it may be sent to the DAC as DSD.

All of this requires an extreme amount of processing from the computer and the DAC performimg in real time, which invariably leads to latency, data loss, etc., not to mention a 33% increase in bandwidth requirements for the USB ports and cabling.

Questyle True DSD

IIR Digital Filter

Currently the majority of DACs use FIR (finite impulse response) digital filters, but research and testing has shown that our ears are very sensitive to the pre-ring that FIR digital filters add to the impulse wave, making the music sound incoherent and unnatural. The CMA800i offers a more advanced IIR digital filter, which completely eliminates the pre-ring from the impulse wave producing a more natural sound.

Questyle IIR Digital Filter

Match the Questyle Audio CMA800i with Active Speakers

The Questyle Audio CMA800i is an excellent choice to drive active speakers. 

Questyle with Active Speakers

Hi-End Components Throughout

Superior sound performance requires the use of Hi-end components. Questyle uses only the very best in the CMA800i, each component undergoes an extensive testing and selection process, many are custom made and purpose built.

Questyle Components

10mm Thick Aluminum Cover and Bottom Chassis

The aluminum chassis is produced by Foxconn using precise CNC tooling machines. The upper cover and bottom chassis “mutual bit” structure design, provides stable heat, excellent control of sympathetic vibration and excellent shielding from RFI/EMI radiation.

Questyle Chasis

Quality Control

Each product is burned in for 72 hours before shipping and every product has its own serial number and test report. The engineers prepare two copies of the test report, one report is put in the box for the customer and another report is kept in a safety deposit box at Questyle.

If there are any questions, about any product, at anytime, Questyle is able to find the report, for that unit, to aid in solving any issues. 

Q&A

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Features

Additional Info

Specifications

 

Headphone Amp section (External Format) DAC and Pre-Amp section  
  • Gain 11.8dB (3.9times)

  • Max Output Power(Po):180mW(7.5Vrms)@300Ω;1W@32Ω

  • THD+N:

    0.00026%@1kHz,Po=100mW,300Ω

    0.00050%@1kHz,Po=50mW,32Ω

  • SNR:  118 dB,

  • Frequency:  DC-200kHz(+0,-0.5 dB);DC-850kHz(+0,-3 dB)

  • Sensitivity:  2.2Vrms

  • Input:  Internal DAC output, or External RCA input,switchable

  • Output:  Dual 6.35mm Standard Stereo Jacks

  • Input:SPDIF input and output, USB Type B input

  • Signal:

    SPDIF input and output: 

    Standard PCM 44.1-192k/16-24bit 

  • USB:PCM 44.1-192k/16-24bit and 

    DSD Source Code following standard SACD format

  • PC OS to match USB input:Win XP,Vista,Win7,Win8 and MAC OS

  • Digital Filter:

    PCM Mode:Switchable IIR(MP) and FIR (LP)

    True DSD Mode: No filter

  • USB supported Kernal stream:

    WASAPI,ASIO,KS

  • Analog Output:Balanced (XLR) and unbalanced (RCA)

  • Max output amplitude:

    XLR:8.6Vrms;RCA:4.3Vrms

  • THD+N:< 0.005% for both XLR and RCA

  • SNR:>107dB for both XLR and RCA

     

    Whole device

  • Voltage:

    100-120V or 220-230V switchable

  • Power Consuming:13W

  • Dimension:330*300*55 mm


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