851D
azur
15
ENGLISH
Technical specifications
All measurements are for 24-bit signals via the digital inputs so as not
to be source material limited unless stated.
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, Minimum, Steep or Phase
modes.
Analog filter
2 Pole Fully Differential
Linear Phase Bessel filter
Digital Input 1 and 2
S/PDIF 75 ohms or TOSLink optical
Digital Input 3 and 4
TOSLink optical
Digital Input 5
BNC Co-axial 75 ohms
Digital Input 6
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
selectable)
Compatibility
USB 1.0:
24-bit 44.1kHz, 48kHz, 96kHz
USB 2.0:
16/24-bit 44.1kHz, 48kHz, 88.2kHz,
96kHz, 176.4kHz, 192kHz
Toslink:
16/24-bit 32-192kHz
BNC, S/PDIF and AES/EBU:
16/24-bit 32-192kHz
Line level / balanced output
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
Linearity @ -120dBF
+/- 0.4dB
Stop-band rejection
> 120dB
(>24kHz)
S/N ratio, A weighted
> 113dB
Total correlated jitter
< 60pS for all digital inputs and USB
2.0
< 180pS for USB 1.0
Crosstalk @1kHz
< -130dB
Crosstalk @20kHz
< -114dB
Output impedance
< 50 ohms
0dB Fs Output
2.2Vrms (2.2Vrms each phase for the
balanced output)
Headphones
Connector
1 x ¼"/6.35mm Headphone output
Compatibility
12 - 600 ohms
Frequency response
20Hz to 20kHz (+/-0.1dB)
THD @ 1Khz 0dBFs
< 0.0007%
THD @ 1Khz -10dBFs
< 0.0019%
THD @ 20Khz 0dBFs
< 0.0009%
(Measurements taken into a 32 ohm load)
Dimensions - H x W x D
115 x 430 x 360 mm
(4.5 x 16.9 x 14.7”)
Max power consumption
40W
Idle consumption
8W approx
Standby power consumption
<0.5W
Weight
7.5kg (16.5lbs)
