Audio Research VT80SE Power Amplifier

Specifications

POWER OUTPUT: 75 watts per channel continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 75 watts, below 0.05% at 1 watt. (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 80kHz.

INPUT SENSITIVITY: 1.4V RMS BAL for rated output. (25dB Bal gain into 8 ohms.)

INPUT IMPEDANCE: 300K ohms Balanced (150K ohms SE)

OUTPUT POLARITY: Non-inverting. Balanced input pin 2+ (IEC-268)

OUTPUT TAPS: 8 ohms, 4 ohms

OUTPUT REGULATION: Approximately 1.0dB 8 OHM LOAD TO OPEN CIRCUIT (Damping factor approximately 8)

OVERALL NEGATIVE FEEDBACK: 15dB

SLEW RATE: 10 volts/microsecond

RISE TIME: 4.0 microseconds

CHANNEL SEPARATION: 112dB

HUM & NOISE: –84dBV weighted, 8 ohms tap

SIGNAL TO NOISE: 112dB

CONTROLS: Power on/off, auto shut-off on/defeat, Input BAL/SE, RS232, 12V trigger

AMBIENT AIR TEMPERATURE: 30° C (86° F) maximum ambient air temperature

POWER SUPPLY ENERGY STORAGE: Approximately 350 joules

POWER REQUIREMENTS: 100-125VAC 60Hz (200-250VAC 50Hz) 410 watts at rated output, 500 watts maximum, 230 watts idle. Sleep power < 1 watt

TUBES REQUIRED: 2 – Matched pair KT120 – Power Output; 2 – 6H30 Driver

DIMENSIONS: Width 48.3cm, Height 26.2cm, Depth 46.8 cm to chassis, 49.3 cm to terminals

WEIGHT: 20.7 kg, Net: 27.4 kg