Output: +4 dBu corresponds to 0 VU. The output is electronically balanced or unbalanced using 990 operational amplifiers. Output impedance is 75 ohms. The recommended output load is 600 ohms or more. Maximum output level is +25dBu.
Input: The input is transformer balanced. The mic input impedance is 2k ohms, the line level input impedance is 20 k ohms and the Hi-z input impedance is one mega-ohm. The mic and line inputs are balanced; the Hi-z input is unbalanced.
Pad Switch: -15 dB and -25 dB positions.
Panel Size: Standard 19" by 3.5" (two units of rack space).
Depth Behind Panel: 10.5" in addition to user's I/0 cabling.
Power: 35 watts, 115 or 230 volts operation, 50 or 60 Hz.
Components: (3) selected I 2AX7A vacuum tubes, (4) high reliability 990 discrete, operational amplifiers, (I 2) integrated circuits, (9) transistors.