Specifications:

Input Impedance
Mic Input - Selectable 450 ohms (Lo-Z) or 1.6 kilohms (Hi-Z)
DI Input - Selectable 2.2 megohms (Lo-Z) or 50 kilohms (Hi-Z)

Output Load Impedance
20 Hz to 20 kHz +/- 1 dB

Maximum Gain
61 dB

Tube Complement
(1) 12AX7, (1) 12AT7

Maximum Mic Input Level
-12 dBu, 1.0% THD+N Ratio

Maximum Instrument Input Level
+4 dBu, 1.0% THD+N Ratio

Maximum Gain Mic Input
55 dB (1.6K ohm input), 60 dB (450 ohm input)

Mic/Instrument In Frequency Response
20 Hz to 20 kHz, +/- 0.1 dB

Maximum Gain Instrument Input
37 dB