COS D10

COS ALGORITHM, BUFFER and RE-CLOCKING

COS's proprietary algorithm with a linear-phase delay FIR filter can up-sample original data to 176.4K or 192K. D10 stores digital data in a one-second buffer before converting to analog signals, under the coordination of a crystal oscillator with a jitter precision less than 1ps and a dedicated re-clocking circuitry.

STREAMING (optional)

Stable and quality streaming is available, with or without a wire, for TiDAL, Spotify, Deezer, and Qobuz. Setup is easy with iOS and Android applications.

PHONO-AMPLIFIER (optional)

There are 5 loading resistors and 3 loading capacitors, all selectable, to accommodate phono cartridges of your choice. Other features include JFET input stage, on-board low-noise linear regulator, and handpicked components for RIAA curve matching and zero capacitor between audio signal paths. Extremely low in noise and distortion.

TWO-LAYER HOUSING

D10 has an NCT internal chassis and an aluminum exterior. This design provides a fortified frame that make possible lowered noise and minimized interference, plus a fine outlook.

SPECIFICATIONS - PRE-AMPLIFIER
COS D1029
Analog Input Balanced X 1, Unbalanced X 1
Analog Output Balanced X 1, Unbalanced X 1
Residual Noise < 2uV(-114dBV) (20Hz~20KHz, non-weighted, input terminated)
Input Overload 16V (balanced), 8V (unbalanced)
Input Impedance 100Kohm
Output Impedance 200 ohm(balanced), 100ohm (unbalanced)
Maximum Output 16V (balanced), 8V (unbalanced)
Frequency Response +-0.1dB/20Hz~20KHz
THD+N < 0.001% (-100dB) (20Hz~20KHz non-weighted)
Signal To Noise Ratio > 110dB/20Hz~20KHz non-weighted
Crosstalk < -120dB
Volume precision resistor array, 140 steps by 0.5dB/step, -64db to +6dB
Headphone Amplifier
audio jack X 2 (unbalanced X 2)
XLR-3 X 2 (balanced X 1)
XLR-4 X 1 (balanced X 1)

SPECIFICATIONS - PHONO AMPLIFIER
COS D1030
Gain 40, 50 or 60dB
Input Resistance 47Kohm to 10ohm
Input Capacitance 0 to 750pF
RIAA response <+-0.2dB/20Hz~20KHz
Residual Noise <30uV (input shorted, 40dB gain, 20Hz~20KHz)
<300uV (input shorted, 60dB gain, 20Hz~20KHz)
THD+N < -90dB (40dB gain,470ohm load, 1KHz, 2Vrms output)
< -70dB (60dB gain,470ohm load, 1KHz, 2Vrms output)

SPECIFICATIONS - DAC
COS D1031
Digital Inputs
USB X 1, Asynchronous Audio Class 2.0
SPDIF BNC X 1
AES XLR X 1
TosLink X 1
I2S X 1 (HDMI, differential)
Sampling Rate
PCM, up to 192Ksps, 24 bits
DSD, up to DSD256 (USB), DSD64 (all other inputs)
Frequency Response +0dB, -0.5dB/20Hz ~ 20KHz
Full Scale Output 2V (unbalanced), 4V (balanced)
THD+N < 0.001% (-100dB) (192Ksps, 24-bit, 20Hz~20KHz, A-
weighted)
Signal To Noise ratio > 110dB, 24-bit, 20Hz~20KHz, A-weighted
DAC 24-bit DAC X 2, up to 192Ksps, 24-bit
Digital Filter COS proprietary, Linear phase delay
Audio clock jitter < 1ps