QUESTYLE CMA 800i HEADPHONE DAC/AMP!

DEMO UNIT! Very Good Condition. Original Box & Accessories

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An Excellent Headphone AMP Section

The Questyle Audio CMA800i headphone amplifier follows Questyle's patented "Current Mode Amplification" design used in the flagship headphone amplifier CMA800R, and it can easily drive headphones of high/low impedance.

The ultra-low distortion level at 0.00028%, ultra-wide bandwidth up to 850kHz (+0, -3dB), and pure Class A working state, plus clean and strong power supply, enable the CMA800i's amplification to be unparalleled among all-in-one DAC/AMP models.

DEVICE INFO:

Finish: Silver
Material: CNC machining aluminum
Dimension: 12.99" (330mm)[W]×7.87” (200mm)[D]×1.38" (55mm)[H]
Weight: 116oz (3.3kg)
Working State: pure Class A  
Voltage: 100-120V or 220-230V switchable 
Power Consumption: 13W 
SPECIFICATIONS:Headphone Amp Section (External Mode)
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 Response: DC-200kHz(+0, -0.5 dB): DC-850kHz(+0, -3 dB)
Sensitivity: 2.2Vrms
Input: internal DAC output, or external RCA x1 pr,switchable
Output: dual 6.35mm standard jacks
DAC and Pre-amp Section
DAC chip: WM8741
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 native (standard SACD format, DSD64)
PC OS Requirements: Win XP,Vista,Win7,Win8 and Mac OS
Digital Filter: PCM Mode: switchable IIR(MP) and FIR (LP)
True DSD Mode: no filter
Core Audio Stream Supported by USB: WASAPI, ASIO, KS
Analog Output: balanced out (XLR x1 pr) and single-ended out (RCA x1 pr)
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