SPECIFICATIONS
Performance Specifications
Maximum Input and Output Levels
Maximum Output Level
+24 dBu with a THD+N < 0.01% at 1kHz measured with 0 dBu input
level, with 150 Ω source impedance and 22Hz/22kHz band-pass
filter
Maximum Microphone
Transformer Input Level
+7 dBu with a THD+N < 0.7% at 1kHz measured at 0 dB of gain with
150 Ω source impedance and 22Hz/22kHz band-pass filter
Mic Input Response
Gain range
0 dB to +60 dB in 10 dB steps, plus 0 dB to +20 dB continuously
variable trim
Input Impedance
Switched Impedance setting
Equivalent Input Impedance at 1 kHz
Low = 600 Ω
ISA 110 = 1.4 kΩ
Med = 2.4 kΩ
High = 6.8 kΩ
EIN
(Equivalent Input Noise)
Measured at 60 dB of gain with 150 Ω
source impedance and 22 Hz-22 kHz
band pass filter
-127 dB
Noise
Noise at output with unity gain (0 dB)
and 22 Hz-22 kHz band pass filter
-97 dBu
Signal-to-Noise Ratio
Measured with 150 Ω source impedance
and 22 Hz-22 kHz band pass filter
121 dB relative to max
output +24 dBu
Total Harmonic Distortion
+ Noise
Measured with a -20 dBu input signal at
+30 dB of gain and with a 22 Hz-22 kHz
band pass filter
< 0.0007% at 1 kHz
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