英国Cambridge Audio/剑桥 Azur851C 带DAC前级CD机
Azur 851C Upsampling DAC, CD Player and Digital Pre-amplifier 特点
Digital to Analogue Converter featuring S/PDIF and Toslink digital inputs, AES/EBU balanced digital input and USB audio inputs (all 24 bit compatible)
CD playback
Optional digital volume and channel balance control
Balanced XLR and unbalanced RCA analogue audio outputs
USB Audio input allowing streaming of up to 24-bit/192kHz audio from computer
ATF2™ audio up-sampling to 24-bit/384kHz
Twin Analog Devices AD1955 24 bit DACs delivering superior sound-staging and stereo imaging
Selectable digital filters – linear phase, minimum phase, steep
Audiophile grade toroidal transformer delivering ultra-low low noise and distortion
Full metal casework design with thick brushed aluminium front panel and dual layer damped feet, giving enhanced resonance control
RS232 controllable
Eco-friendly <0.5W Standby power consumption
Azur Navigator remote control with Cambridge Audio amplifier and iPod dock control
Available in black and silver finishes
D/A Converters: |
Dual Analog Devices AD1955 24 bit DACs |
Digital filter: |
Analog Devices Black Fin ADSP-BF532 32 bit DSP performing 2nd Generation ATF2 up-sampling to 24 bit 384kHz Linear Phase, Minimum phase or Steep modes. |
Analogue filter: |
2 Pole Fully Differential Linear Phase Bessel filter |
Frequency Response: | 20Hz to 20kHz (+/-0.1dB) |
THD @ 1Khz 0dBFs: | < 0.0004% |
THD @ 1kHz -10dBFs: | < 0.0004% |
THD @ 20kHz 0dBFs: | < 0.0007% |
IMD (19/20kHz) 0dBFs | < 0.0002% |
Linearity @ -90dBFs: | +/- 0.2dB |
Stopband rejection (>24kHz): | > 120dB |
S/N ratio, A weighted | > 113dB |
Total correlated jitter: |
< 60pS for all digital inputs, CD playback and USB 2.0 < 180pS for USB 1.0 |
Crosstalk @ 1kHz: | < -130dB |
Crosstalk @ 20kHz: | < -114dB |
Output Impedance: | < 50 ohms |
Output: |
2.2Vrms (2.2Vrms each phase for the balanced output) |
Digital Inputs: |
Digital Input 1: S/PDIF 75 ohms or Toslink optical Digital Input 2: S/PDIF 75 ohms or Toslink optical |
AES/EBU | XLR balanced 110 ohms per phase |
USB |
USB Type B conforming to Audio profile 1.0 or USB Audio profile 2.0 (user selectable) USB Maximum Current Rating 500mA |
Compatibility |
USB 1.0 16-24 bit, 32-96kHz USB 2.0 16-24 bit, 32-192kHz Toslink 16-24 bit, 32-96kHz S/PDIF and AES/EBU 16-24 bit, 32-192kHz CD playback is intrinsically limited to 16-bit, 44.1kHz |
Max. Power Consumption: | 40W (CD playing) |
Quiescent power consumption: | 8W approx |
Standby Power Consumption: | <0.5W |
Dimensions (H x W x D): |
115 x 430 x 360 mm (4.5 x 16.9 x 14.7”) |
Weight: |