Specifications - Audio Research Reference 750 SE Manual

Power Output: 750 watts per channel continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 0.5% at 750
watts, below .04% at 1 watt.
Approximate actual power available at "clipping" 850 watts (1kHz). (Note that actual power output is dependent upon both
line voltage and "condition" i.e.: if power line has high distortion, maximum power will be affected adversely, although from a
listening standpoint this is not very critical.)
Power Bandwidth: (-3dB points) 15Hz to 150kHz.
Frequency Response: (-3dB points at 1 watt) 1 Hz to 200 kHz.
Input Sensitivity: 4.6V RMS Balanced for rated output. (24 dB gain into 8 ohms.)
Input Impedance: 200K ohms Balanced.
Output Taps: 4, 8, 16 ohms.
Output Regulation: Approximately 0.5dB 16 ohm load to open circuit (Damping factor approximately 17).
Overall Negative Feedback: 13dB.
Slew Rate: 20 volts/microsecond.
Rise Time: 1.5 microseconds.
Hum & Noise: Less than 0.2mV RMS – 110dB below rated output (IHF-A weighted, input shorted, 16 ohm output).
Power Supply Energy Storage: Approximately 1300 joules.
Power Requirements: 105-130VAC 60Hz (200-270VAC 50Hz) 2100 watts at rated output, 2400 watts maximum,
800 watts at "idle".
Tubes Required: 8 Matched pair KT150 Power Output; 1 6550WE Regulator; 1 6H30 Regulator Amplifier; 1 matched pair KT150
Driver; 1 6H30 follower.
Fuses:
Power line (Mains) - (120V) 20 Amp Bussman MDA Slow Blow / (240V) 10 Amp Bussman MDA Slow Blow
Slow start circuit - (120V) 4 Amp Bussman MDQ Slow Blow / (240V) T3.15A Fuse
Computer - (120V) 2 Amp Bussman MDQ Slow Blow / (240V) T1A Fuse
Dimensions: Width: 13.5" (34.3 cm)
Height: 23" (58.4 cm)
Depth: 20.8" (52.8 cm)
Handles extend 1.5" (3.8 cm) forward and rearward.
Weight:
170 lbs. (77.2 kg) Net;395 lbs. (180 kg) per pair shipped weight.

Specifications

16