Vacuum Tubes: 4 x 12AX7WA dual triodes
Bal Transformer Coupled Mic Input Impedance: 1250 Ohms
Unbalanced 1/4" Direct Input Impedance: 10 Meg Ohm
Max Mic input (Low Gain Setting): -5 dBu
Max Input Mic input (High Gain Setting): -25 dBu
Max Input Direct input (Low Gain Setting): +24 dBu
Max Input Direct input (High Gain Setting): +17 dBu
Max Output : +35 dBu
Max Output : 43V RMS
Max Output: +22 dBm
Hi-current WFDRIVE Bal Output Impedance: 50 Ohms
Output Headroom (referenced to +4 dBu): 31 dB
Dynamic Range: 118 dB @ LOW GAIN, 100 dB @ HI GAIN
THD & Noise: 0.004% at Low Gain setting
THD & Noise: 0.04% at Hi Gain setting
Noise Floor Micpre (A WGT): - 85dB @ LOW GAIN
Signal to Noise Ratio (Ref. to +4dBu): 87dB @ LOW GAIN
EIN (22-22kHz BW, A WGT): -129dB with 150 Ohm source
Frequency Response: 20 Hz to 20 kHz -0.1dB, +0.3 dB
Gain via Microphone Input: 40 LOW or 50dB HI GAIN
Gain via Line Input: 20 or 30dB (40dB via internal jumper)
Low Signal Green LED (Output Level): -22 dBu
High Signal Red LED (Output Level): +24 dBu
AUTOMUTE warmup delay: 30 seconds
Power consumption: 36 Watts
Operating mains voltage: 90 to 254 VAC (internal supply)
Mains Voltage Frequency: 50~60Hz
Dimensions: 19" x 3 1/2" x 7" (occupies 2u)
Unit weight: 8.6 lbs.
Shipping weight: 11.8 lbs.