Audio Research

REF750SE

The Reference 750 SE redefines all expectations of what is possible from an amplifier in a music playback system. It is the culmination of everything Audio Research knows about amplifier design and manufacture – High Definition in its purest, most dynamic form. **Price In USD**

Regular price $33,000.00
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The Reference 750 SE redefines all expectations of what is possible from an amplifier in a music playback system. It is the culmination of everything Audio Research knows about amplifier design and manufacture – High Definition in its purest, most dynamic form. **Price In USD**

  • 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. 
  • 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 (260-750VAC 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.
  • DIMENSIONS: 13.5" (34.3 cm) W x 23" (58.4 cm) H x 20.8" (52.8 cm) D. 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.