Digital Inputs
Number of Digital Inputs (switch selected): 3 (XLR, Coaxial, Optical)
Number of Audio Channels: 2
Input Sample Frequency Range: 28 to 195 kHz (XLR, Coaxial)
28 to 96 kHz (Optical)
Maximum Input Word Length 24 bits
Digital Input Impedance on XLR input: 110 Ω
Digital Input Impedance on Coaxial input (Jumper Selected): 75 Ω or Hi-Z (Bridging)
Transformer Coupled Digital Inputs: Yes
DC Blocking Capacitors on Digital Inputs: Yes
Transient and Over-Voltage Protection on Digital Inputs: Yes
Minimum Digital Input Level: 300 mVpp on XLR, 150 mVpp on Coaxial
Jitter Tolerance (With no Measurable Change in Performance): >12.75 UI sine, 100 Hz to 10 kHz
> 3.5 UI sine at 20 kHz
> 1.2 UI sine at 40 kHz
> 0.4 UI sine at 80 kHz
> 0.29 UI sine at 90 kHz
> 0.25 UI sine above 160 kHz
Jitter Attenuation Method: Benchmark UltraLock™
BALANCED ANALOG OUTPUTS:
Number of Balanced Analog Outputs: 2
Output Connector: Gold-Pin Neutrik™ male XLR
Output Impedance: 60 Ω
Output Level Calibration Controls: 10-turn trimmers (1 per output)
Calibration Adjustability: 2 dB / turn
Output Level Range (at 0 dBFS) In “Calibrated” Mode: +9 dBu to +29 dBu (Attenuator off)
-1 dBu to +19 dBu (Attenuator = 10 dB)
-11 dBu to +9 dBu (Attenuator = 20 dB)
-21 dBu to -1 dBu (Attenuator = 30 dB)
Output Level Range (at 0 dBFS) In “Variable” Mode: Off to +27 dBu (Attenuator off)
Off to +17 dBu (Attenuator = 10 dB)
Off to +7 dBu (Attenuator = 20 dB)
Off to -3 dBu (Attenuator = 30 dB)
Output Level Variation with Sample Rate (44.1 kHz vs. 96 kHz): < +/- 0.006 dB
UNBALANCED ANALOG OUTPUTS:
Number of Balanced Analog Outputs: 2
Output Connector: RCA
Output Impedance: 30 ω
Output Level Calibration Controls: Shared with Balanced Outputs
Output Level Range (at 0 dBFS) In “Calibrated” Mode: -6 dBu to +13.5 dBu
Output Level Range (at 0 dBFS) In “Variable” Mode: Off to +11 dBu
Calibration Adjustability: 2 dB / turn
Output Level Variation with Sample Rate (44.1 kHz vs. 96 kHz): < +/- 0.006 dB
Factory Preset 2vRMS (8.2 dBu)
HPA2™ HEADPHONE OUTPUTS:
Number of Headphone Outputs: 2
Output Connector: 1/4" TRS
Output Impedance: 0 ω
Output Level Control: Stereo Control on Front Panel
Output Level Range (at 0 dBFS) into 60 Ω Load: Off to +21 dBu
AUDIO PERFORMANCE:
Fs = 44.1 to 96 kHz, 20 to 20 kHz BW, 1 kHz test tone, 0 dBFS = +24 dBu (unless noted):
SNR – A-Weighted, (0 dBFS = +20 to +29 dBu): 116 dB
SNR – Unweighted, (0 dBFS = +20 to +29 dBu): 114 dB
SNR – A-Weighted at low gain, (0 dBFS = +9 to +18 dBu): 114 dB
THD+N, 1 kHz at 0 dBFS: -105 dBFS, -105 dB, 0.00056%
THD+N, 1 kHz at –1 dBFS: -107 dBFS, -106 dB, 0.00050%
THD+N, 1 kHz at –3 dBFS: -110 dBFS, -107 dB, 0.00045%
THD+N, 20 to 20 kHz test tone at –3 dBFS: -110 dBFS, -107 dB, 0.00045%
Frequency Response at Fs=48 kHz: +/- 0.1 dB (20 to 20 kHz)
-0.02 dB at 10 Hz
-0.20 dB at 20 kHz
Frequency Response at Fs=96 kHz: +/- 0.1 dB (20 to 20 kHz)
-0.02 dB at 10 Hz
-0.20 dB at 20 kHz
-0.85 dB at 40 kHz
-2.5 dB at 45 kHz
Crosstalk -100 dB at 20 kHz
-125 dB at 1 kHz
-130 dB at 20 Hz
Maximum Amplitude of Jitter Induced Sidebands: < -141 dB
(10 kHz 0 dBFS test tone, 12.75 UI sinusoidal jitter at 1 kHz)
Maximum Amplitude of Spurious Tones with 0 dBFS test signal: < -126 dB
Maximum Amplitude of Idle Tones: < -128 dB
Maximum Amplitude of AC line related Hum & Noise: < -126 dB
Interchannel Differential Phase (Stereo Pair): +/- 0.5 degrees at 20 kHz - any sample rate
Interchannel Differential Phase (Between DAC1 Units Fs<110): +/- 0.5 degrees at 20 kHz - Fs < 110 kHz
Interchannel Differential Phase (Between DAC1 Units Fs>110): +/- 4.1 degrees at 20 kHz - Fs > 110 kHz
Delay (Digital Input to Analog Output): 1.01 ms + (48/Fs)
2.10 ms at 44.1 kHz
2.01 ms at 48 kHz
1.55 ms at 88.2 kHz
1.51 ms at 96 kHz
1.28 ms at 176.4 kHz
1.26 ms at 192 kHz
Maximum Lock Time – after Fs change: 100 ms
Soft Mute Ramp Up/Down Time: 10 ms
Mute on Receive Error: Yes
Mute on Lock Error: Yes