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Audio Research VT80

0% – 3 Year Financing Available!!

Audio Research VT80 –

Good Condition Trade-In

A Foundation Series Power Amplifier.The new VT80 is the much-anticipated amplifier that finally allows the Foundation series to be shown as a complete system. Combining an enticing new esthetic with worry-free operation and great audio performance

Audio Research

Product Description

0% – 3 Year Financing Available!!

Audio Research VT80 –

Good Condition Trade-In

Foundation Series Power Amplifier

The new VT80 is the much-anticipated amplifier that finally allows the Foundation series to be shown as a complete system. Combining an enticing new esthetic with worry-free operation and great audio performance, the VT80 is a vacuum-tube amplifier that will open doors to a new customer base.

At the heart of the VT80 are two important new features that have never been offered before by Audio Research. The first is a proprietary auto-bias circuit developed entirely in-house by our engineering department. Simply drop in the tubes and the VT80 will adjust bias for each output tube. The circuit automatically adjusts for tube wear or fluctuations in the power in real time. It will also work for different types of output tubes, including 6550, KT88, KT90, KT120 or KT150. The adjustment range is wide, but matched tubes from Audio Research still provide the highest performance. 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, not a resistor. This is what we mean by worry-free operation.

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. Designed as part of the Foundation series, the core of the VT80 is adapted from the Reference 75, including the same power and output transformers, similar circuit topology, and many of the same parts. The 75 watt-per-channel VT80 offers striking dynamics, powerful bass, and natural clarity combined with a very holographic presentation. The result is sonically breathtaking and provides a new reference in its price range.

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 ohmsOUTPUT 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
112dBHUM & NOISE
–112dBV no signal, input shortedSIGNAL TO NOISE
115dBCONTROLS
Power on/off, auto shut-off on/defeat, Input BAL/SE, RS232, 12V triggerAMBIENT AIR TEMPERATURE
30° C (86° F) maximum ambient air temperaturePOWER SUPPLY ENERGY STORAGE
Approximately 350 joulesPOWER REQUIREMENTS
100-125VAC 60Hz (200-250VAC 50Hz) 410 watts at rated output, 500 watts maximum, 230 watts idle. Sleep power < 1 wattTUBES REQUIRED
2 – Matched pair KT120 – Power Output; 2 – 6H30 DriverDIMENSION
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 terminalsWEIGHT
45.7lbs. (20.7 kg) Net; 60.5 lbs. (27.4 kg)

Legal Stuff: Used Item – No warranty – Not Authorized Dealer.

Per Aldo Filippelli -Director of Sales – The Americas – 03/12/2019

“You cannot use our trademarks in any form of your marketing. However, if you are advertising to sell a used piece of Audio Research, you can show an image of the product in an ad and must clearly mention that the unit is used, that the unit is not under warranty unless it’s less than 3 years old from date of original sale, and that you are not an Authorized Dealer.”

USA Tube Audio

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VT80
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
–112dBV no signal, input shorted

SIGNAL TO NOISE
115dB

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 DIMENSION 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; 60.5 lbs. (27.4 kg)