Questyle Audio CMA800i User Manual
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In May 2014 the Munich High-end Audio show, CMA800i is officially launched tointernational 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 ampCMA800R current mode amplification patent design, most components used aresame. 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 featuresenables CMA800i amplification be most outstanding among all the all-in-onemodels.CMA800i DAC section, PCM version it adopts USB Asynchronous transmission 3XClock structure design, support 192kHz/24bit both USB and SPDIF input/SPDIFoutput, more important is it support True DSD format digital to analog converting.Different from current DoP (DSD over PCM) format, CMA800i drive program willsend DSD source code directly to DAC section for digital to analog converting, itshardware is specially designed with DSD channel to process DSD signal in itsoriginal format ,strictly comply with standard SACD format. Same as CMA800i,CMA800i adopts Wolfson WM8741 DAC chipset with 4 levels of digital filters andpower regulation. In PCM version it’s designed with IIR(MP) digital filters toeliminates pre-ring, while in True DSD version all digital filters are invalid.Pre-Amplifier output is one more specific feature for CMA800i. Many brands, whenthey design a all-in-one model, they use the headphone amplifier circuit loop tosupport 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 totalCheck List02 03independent located. Volume control adopts a ALPS27 potentiometer working inpure analog format, supporting remote control, as well more suit for supportingactive speakers.A good sound performance require Hi-end components to support. CMA800i isassembled with suitable Hi-end components like DALE military resistors, WIMAcapacitors, 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 lowestlevel. Even the feet is pure aluminum material, tooled by CNC machine, it can beswitched to 3-feet triangle structure or 4-feet quad structure as per user’s favorite.CMA800iPower CordCD-ROMRemote ControlCMA800i User ManualTest ReportUser Manual of Remote Control1pc1pc1pc1pc1pc1pc1pc |
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