Specifications; Microphone Preamps - Benchmark PRE420 Instruction Manual

Specifications

Microphone Preamps

Number of Preamps
Connectors
Grounding
Input Impedance (pad off)
Input Impedance (pad on)
Gain Range (with pad off)
Gain Range (with pad on)
Maximum Input Level (pad off)
Maximum Input Level (pad on)
Phantom Power
High-Pass (rumble filter)
Preamp Bandwidth
EIN at 60 dB Gain (20 Hz to 20 kHz) – to any output
THD+N (1 kHz, BW=20 kHz, to any output at +27 dBu)
IMD (50Hz and 7 kHz, to any output at +24 dBu)
PRE420 Instruction Manual – rev. E
4
Gold-Pin Neutrik™ female XLR with
direct ground feature
Direct bonding of pin 1 to chassis
8.1k Ohms
1.37k Ohms
22 dB to 60 dB (to direct outputs)
2 dB to 40 dB (to direct outputs)
+7 dBu (+4.8 dBV, 1.7 Vrms)
+27 dBu (+24.8 dBV, 17.4 Vrms)
+48V w/individual switches
40 Hz second-order 12-dB/octave
-0.02 dB at 10 Hz
-0.17 dB at 200 kHz
- 3 dB at 500 kHz
-128 dBu at 150 Ohms
-131 dBu at 40 Ohms
-133 dBu at 0 Ohms
-112 dB, 0.00024% at 22 dB Gain
-110 dB, 0.0003% at 35 dB Gain
-108 dB, 0.00038% at 40 dB Gain
-101 dB, 0.00085% at 55 dB Gain
-104 dB, 0.0006% at 35 dB Gain
-104 dB, 0.0006% at 40 dB Gain
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