Audio Research Reference 75 SE Tube Power Amplifier

Condition: Used in good condition
Brand: Audio Research
Model: Reference 75 Special Edition
Type: Tube Power Amplifier

POWER OUTPUT:
75 watts per channel continuous from20Hz to 20kHz. 1kHz total harmonic distortion typically 0.6% at 75 watts, below 0.05% at 1 watt. Approximate actual power available at ‘clipping’ 76 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) 7Hz to 60kHz
FREQUENCY RESPONSE: (-3dB points at 1 watt) 0.7Hz to 75 kHz
INPUT SENSITIVITY: 1.4V RMS BAL for rated output. (25 dB Bal gain into 8 ohms.)
INPUT IMPEDANCE: 300K ohms Balanced
OUTPUT TAPS: 8 ohms, 4 ohms.
OUTPUT REGULATION: Approximately 1.0dB 8 ohm load to open circuit.
OVERALL NEGATIVE FEEDBACK: 15dB
DAMPING FACTOR: Approximately 8
SLEW RATE: 10 V/µs
RISE TIME: 4.0 µs
HUM & NOISE:
Less than 0.06mV RMS – 112dB below rated output (IHF weighted, input shorted).
POWER SUPPLY ENERGY STORAGE: Approximately 520 joules
POWER REQUIREMENTS:
105-125VAC 60Hz (210-250VAC 50Hz) 410 watts at rated output, 500 watts maximum, 230 watts idle.
TUBE COMPLEMENT:
REFERENCE 75: (2 matched pairs) KT120 power output, (2) 6H30 driver. REFERENCE 75 SE: (2 matched pairs) KT150 power output, (2) 6H30 driver.
OTHER:
Output polarity: Non-inverting. Balanced input pin 2+ (IEC-268).
WEIGHT: 21.3 kg

Includes :

• Audio Research Reference 75 SE
• Power Cord
• Manual

Return / Warranty: 30 days