Azur851C
Flagship Upsampling DAC, CD Player & Preamplifier
Whatever the digital source, the 851C improves it. CDs, streamed content, PC music files, all sound amazing
Our finest CD player and DAC, the 851C uses our extensive digital knowledge to become the cornerstone of your digital hub. No matter the source of your digital music, twin DACs in dual differential mode and 2nd generation Adaptive Time Filtering make the music sound as the original artist intended – extraordinary.
To make the 851C we used all our hi-fi know-how. So it has a toroidal transformer and audiophile components, and a signal path that’s been revised and tweaked for the cleanest route possible. It’s built to connect with as many sources as possible, with optical and co-axial digital in and outputs, XLR and RCA outputs, plus a USB audio input for your PC.
That the 851C is an exceptional CD player is beyond doubt. It has our high performance S3 Custom Servo for remarkable error-free data retrieval, while the twin DACs upsample data to 24-bit standard. But the 851C is also a pre-amp, so can be directly connected to a power amp or active speakers for further sonic benefits.
Specifications
Digital to analogue converterDual Analog Devices AD1955 24-bit DACs
Digital filterAnalog Devices Black Fin ADSP-BF532 32 bit DSP performing 2nd Generation ATF2 upsampling to 24-bit/384kHz. Linear Phase, Minimum phase or Steep modes.
Analogue filter2 Pole Fully Differential Linear Phase Bessel filter
Digital input 1S/PDIF 75 Ohms or TosLink optical
Digital input 2S/PDIF 75 Ohms or TosLink optical
AES/EBU input XLR balanced 110 Ohms per phase
USB audio input USB Type B conforming to Audio profile 1.0 or USB Audio profile 2.0 (user 1.0 or USB Audio profile 2.0 (user selectable)
Audio outputsBalanced XLR and unbalanced RCA analogue audio outputs
CompatibilityUSB 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 bits 32-192kHz
CD playback is intrinsically limited to 16-bits 44.1kHz
THD (unweighted) @ 1kHhz 0dBFs< 0.0004%
THD (unweighted) @ 1kHz -10dBFs< 0.0004%
THD (unweighted) @ 20kHz 0dBFs< 0.0007%
IMD (19/20kHz) 0dBFs< 0.0002%
Linearity @ -90dBFs+/- 0.2dB
Linearity @ -120dBF+/- 0.4dB
Stop-band rejection (>24kHz)> 120dB
S/N ratio (ref 1w)> 113dB
Total correlated jitter< 60pS for all digital inputs, CD playback and USB 2.0
< 180pS for USB 1.0
Crosstalk @1kHz< -130dB
< -130dB< -114dB
Output impedance< 50 Ohms
0dB Fs output2.2Vrms (2.2Vrms each phase for the balanced output)
Max. power consumption40W
Idle consumption8W
Standby power consumption<0.5W
ColourBlack or silver
Dimensions (WxHxD)430 x 115 x 360mm (16.9 x 4.5 x 14.7”)
