Appendix A: Specifications 33
appendix a
Specifications
Gain Range 0 dB to +69 dB, in approximately
3 dB steps. With Pad enabled, –18 to +51 dB.
Input Impedance (Input Z): 1.5k ohm (low im-
pedance); 15k ohm (mid impedance);
1.5M ohm (high impedance)
Frequency Response: ±0.1 dB; 20 Hz to 20 kHz,
@ +48 dB gain
Total Harmonic Distortion + Noise <0.0005%
@ 1 kHz, 0 dB gain @ 20 dB signal; <0.001%
(20 Hz to 20 kHz), 0 dB gain @ 0 dB signal
Equivalent Input Noise –128 dB @ 66 dB gain
(20 Hz to 20 kHz unweighted) 150 ohm
Phase Response <2.5 degrees (20 Hz to 20 kHz)
Dynamic Range 124 dB @ 0 dB gain
(20 Hz to 20 kHz unweighted)
Maximum Input Level +47 dBu Pad In, @ 1 kHz,
<0.1% THD
Maximum Output Level +29 dBu balanced,
@ 1 kHz, <0.1% THD
Common Mode Rejection Ratio <–75 dB
@ 1 kHz, 140 mVcm, +6 dB gain
Crosstalk <<90 dB, 20 Hz to 20 kHz
Phantom Power 48V ±1V
High-Pass Filter –3 dB @ 85 Hz 18 dB/octave
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