audio research
VT60

Description
Tube stereo power amplifier. Two versions exist: VT60 and VT60SE (Special Edition).

Introduced
1994

Discontinued
?

Revisions
-

Options
-

MSRP (US new retail)
$1,995 (VT60)
$2,495 (VT60SE)

Specifications

Power output 50 watts per channel continuous from 20Hz to 20kHz. Approximate actual power available at "clipping" 52 watts (1kHz).
Power bandwidth (-3dB points) 15Hz to 40kHz
Frequency response (-3dB points at 1 watt) 3Hz to 40 kHz
Input sensitivity 1.05V RMS for rated output
Input impedance 100K ohms unbalanced
Output taps  
Output regulation Approximately 0.6dB 16 ohm load to open circuit
Overall negative feedback 19 dB
Damping factor 14
Distortion 1kHz total harmonic distortion typically 1% at 50 watts, below .05% at 1 watt.
Slew rate 7 V/µs
Rise time 10 µs
Hum & noise Less than 0.5mV RMS - 95dB below rated output (IHF weighted, input shorted)
Power supply energy storage 184 joules
Power requirements 105-125VAC 60Hz (210-250VAC 50Hz) 265 watts at rated output, 300 watts maximum, 175 watts at "idle"
Tube complement (2 matched pairs) 6550B, (2) 6922 driver, (1) 6922 input
Other  
Dimensions VT60: 14" (35.6 cm) W x 7" (17.8 cm) H x 13.3" (33.8 cm) D. Output connectors extend 1" (2.5 cm) to the rear.
Weight VT60: 32.7 lbs. (14.9 kg) Net; 48 lbs. (21.8 kg) Shipping.
VT60SE: 36 lbs Net.

Reviews

Pictures

VT60:

VT60SE: