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VT80 Power Amplifier
Worry-free Performance
“The VT80 IS the best amplifier in the bass range that I’ve heard in my room. Is
it because my speakers like the transformer output? It may be, but with three
different sets of speakers, the VT80 came out the consistent winner for bass
depth, drive, and articulation.”
Secrets of Home Theater and High Fidelity,
www.hometheaterhifi.com, March 2017
Combining an enticing new esthetic with worry-free operation and great audio performance, the engineering
team at Audio Research pushed the boundaries with their latest creation, the VT80 power amplifier. Beneath
the beautiful aluminum chassis is a circuit board of equal beauty, with no detail forgotten. At the heart of the
VT80 are two important features never before offered by Audio Research. The first is a proprietary auto-bias
circuit developed entirely in-house. Simply drop in the tubes and the VT80 automatically adjusts the bias for
each output tube. The circuit repeatedly adjusts for tube wear or fluctuations in the power in real time making
the occasional bias adjustment a thing of the past. It also works for different types of output tubes, including
6550, KT88, KT90, KT120 or KT150 to customize the VT80 to your liking. Finally, an auto-bias circuit that works
in real time and does not compromise performance!
The second new feature includes fusing of each output tube. In case of a fault condition in a tube, an easily
replaceable fuse will blow. This is what we mean by worry-free operation.
Proof of our achievement is in the listening. The level of control and resolution from the deepest bass to the
highest frequencies simply must be experienced to be believed. The VT80 sounds like a much bigger amplifier
than it is. With balanced XLR and single ended RCA inputs, the VT80 is compatible with a wider range of
preamplifiers than our Reference series amplifiers, making it easier to use an Audio Research amplifier as the
cornerstone of your system.
After nearly 50 years, our focus remains the advancement of the state-of-the-art in music reproduction. Every
component is meticulously hand-crafted and personally auditioned before it leaves our factory. Our attention
to detail, customer service, and product support create unprecedented value. An Audio Research component
is more than a purchase, it’s an investment.
With the beautiful new look, the flexible connection options, and the great new features, thrilling audio
performance remains our primary goal and the foundation upon which we were built. An in-person audition
at one of our many dealers worldwide, with a few of your favorite musical selections, will convince you of the
VT80’s musical achievement. We invite you hear the difference by visiting your nearest Audio Research dealer.
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Complete technical specifications can be found on our website.
S P E C I F I C A T I O N S
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
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.)
Output taps
4, 8 ohms
Hum & Noise
–84dBV weighted, 8 ohms tap
Tube complement
2 - Matched pair KT120 – Power Output;
2 - 6H30 Driver
Power requirement
100-125VAC 60Hz (200-250VAC 50Hz) 410 watts at
rated output, 500 watts maximum, 230 watts idle.
Sleep power < 1 watt
Dimensions
Width: 19” (48.3 cm)
Height: 10.33” (26.2 cm)
Depth: 18.45” (46.8 cm) to chassis, 19.40” (49.3 cm)
to terminals
Weight
45.7lbs. (20.7 kg) Net; 62 lbs. (29 kg) Shipping
3900 Annapolis Lane North | Plymouth, MN 55447 USA | T: 763.577.9700 | www.audioresearch.com
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