Grace m904 - SPECIFICATIONS

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ANALOG
THD+N @ 0dB gain, 1kHz
+20dBu out <0.001% (0.00075% typical)
+10dBu out <0.003% (0.001% typical)
0dBu out <0.009% (0.005% typical)
Intermodulation Distortion SMTPE/DIN 4:1 50Hz, 7kHz
@+20dBu out <0.002% (0.0015% typical)
@ 0dBu out <0.008% (0.006% typical)
Frequency Response
+/-3dB 3Hz - 250Khz
Dynamic Range
20-22kHz bandwidth 112dB
20-22kHz bandwidth and A weighting filter 115dB
Output Noise
20-22kHz bandwidth, -20dB gain
High gain mode -86dBu
Low gain mode* -96dBu
20-22kHz bandwidth and A weighting filter, -20dB gain
High gain mode -91dBu
Low gain mode -99dBu
Phase Deviation
20Hz to 20kHz < 4°
10Hz to 100kHz < 15°
Crosstalk any channel
100Hz < 100dB
1kHz < 100dB
20kHz < 85dB
Balanced Input CMRR
60Hz > 60dB
1kHz >65dB
10kHz >60dB
Gain Range
Low gain mode (0.5dB steps)* -105.5dB to +20dB
High gain mode (0.5dB steps) -95.5dB to +30dB
Channel Tracking Accuracy
Any channel +/-0.05dB
Maximum Output Level
Low gain mode (balanced) +15dBu
High gain mode (balanced) +27dBu
Maximum Input Level
Balanced inputs +30dBu
Unbalanced inputs +20dBu
Impedances
Balanced inputs 30k Ohms
Unbalanced inputs 50k Ohms
Balanced outputs 300 Ohms
Minimum load impedance 300 Ohms
Headphone output impedance 2 Ohms
* available via optional jumper setting, please consult with factory.
SPECIFICATIONS