Audio Research D 75 A Power Amp Mono Block

Specifications
Power output 75 Watts RMS per channel minimum into 4, 8, or 16 ohm load from 20 Hz to 15 KHz with less than 1% total harmonic distortion
Power bandwidth
Frequency response
Input sensitivity 1.5V for rated output
Input impedance 80K ohms at 20 Hz, 30K ohms at 15 KHz
Output taps
Output regulation
Overall negative feedback
Damping factor 14 at 8 ohms (1 KHz)
Distortion
Slew rate
Rise time
Hum & noise More than 80dB below rated output
Power supply energy storage
Power requirements 100,120,200,240 VAC at 50-60 Hz, 550 Watts at rated output
Tube complement (4)12AX7, (8) 6FQ7, (2 matched pairs) 6550, (1) 5881
Other
Dimensions 19" W x 7" H x 12¼" D
Weight 52 lbs.Net; 63 lbs. Shipping