In May 2014 the Munich High-end Audio show, CMA800i is officially launched to
international market. Since design stage, CMA800i is set as an integrated DAC,
Headphone Amp and Pre-amplifier questing for most Hi-end sound quality.
CMA800i headphone amplifier section follows Questyle flagship headphone amp
CMA800R current mode amplification patent design, most components used are
same. Ultra low distortion as to 0.00026%, ultra wide bandwidth up to 850kHz (+0,
-3dB), working in pure Class A status under Super-current, all these features
enables CMA800i amplification be most outstanding among all the all-in-one
models.
CMA800i DAC section, PCM version it adopts USB Asynchronous transmission 3X
Clock structure design, support 192kHz/24bit both USB and SPDIF input/SPDIF
output, more important is it support True DSD format digital to analog converting.
Different from current DoP (DSD over PCM) format, CMA800i drive program will
send DSD source code directly to DAC section for digital to analog converting, its
hardware is specially designed with DSD channel to process DSD signal in its
original format ,strictly comply with standard SACD format. Same as CMA800i,
CMA800i adopts Wolfson WM8741 DAC chipset with 4 levels of digital filters and
power regulation. In PCM version it’s designed with IIR(MP) digital filters to
eliminates pre-ring, while in True DSD version all digital filters are invalid.
Pre-Amplifier output is one more specific feature for CMA800i. Many brands, when
they design a all-in-one model, they use the headphone amplifier circuit loop to
support pre-amplifier function in the meanwhile, on the sake of cost. But CMA800i,
only care how to achieve best sound performance, is designed with totally indepen-
dent pre-amplifier, even the power supplier supporting pre-amplifier circuit is total
Check List
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independent located. Volume control adopts a ALPS27 potentiometer working in
pure analog format, supporting remote control, as well more suit for supporting
active speakers.
A good sound performance require Hi-end components to support. CMA800i is
assembled with suitable Hi-end components like DALE military resistors, WIMA
capacitors, Nichicon FG capacitors, customized Plitron Toroidal transformer, Neutr-
ik connectors...etc. Aluminum chassis is specially CNC tooled into “mutual-bit”
structure, 10mm thickness cover, reduce the CMA800i natural resonance to lowest
level. Even the feet is pure aluminum material, tooled by CNC machine, it can be
switched to 3-feet triangle structure or 4-feet quad structure as per user’s favorite.
CMA800i
Power Cord
CD-ROM
Remote Control
CMA800i User Manual
Test Report
User Manual of Remote Control
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