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6C33C-B triode output tube with SuperTube signal path

Delivering 60 watts per channel, the VK-80t uses the 6C33C-B triode output tube for power delivery. The powerhouse 6C33C-B vacuum-tube offers many times the current delivery of the 6550/KT90 tetrode tube variant used in most traditional tube designs. By using the same high-current triode 6C33C-B tube employed in BAT’s flagship REX 3 Power amplifier, the VK-80t delivers the high-current performance required to drive even difficult low-impedance speaker loads. The use of the 6H30 tube in the first gain stage contributes to a greater level of dynamics and extension than would be found in amplifiers using more traditional and non-linear vacuum tubes. The result is an all triode fully balanced design that provides a natural portrayal of harmonic texture and instrumental timbre.

“Fuse-less” protection circuit for enhanced sound and user-friendly operation

In the event an output tube becomes over-stressed, all you need to do is turn the VK-80t off and on again to restore normal operation. That’s it. The elimination of internal fuses also contributes to a greater sense of ease and a more natural reproduction of music. In addition, the fuse-less protection circuit in the VK-80t is combined with a world-class automatic-bias circuit to make owning a tube amplifier as convenient as possible for the BAT customer.

Intelligent auto-bias design makes operation a cinch

The advanced engineering within the VK-80t continues beyond the fuseless protection circuit.
The VK-80t auto-bias design eliminates the traditional headache associated with most vacuum-tube power amplifiers—specifically, the constant need to set and readjust the proper bias of the output tubes. The VK-80t intelligent automatic bias design adjusts for changing line voltage and aging tubes, with each output tube having its own dedicated bias circuit. No tubes to bias. No tube fuses to replace. With BAT, great power comes with great convenience.

Stereo Amp or Monoblock – Choose the Power Output You Need

Delivering 60 watts per channel in the stereo version or a robust 120 watts per channel as a monoblock, the VK-80t power amplifier can be ordered from the factory in either configuration. More importantly, a stereo VK-80t amplifier can be upgraded to a monoblock version at any time. Simply convert your existing stereo VK-80t amplifier to a monoblock – order a matching amplifier – and you’ll double your power output. This is the kind of thoughtful engineering that has made BAT customer’s among the most loyal in the industry.

The sum of this engineering excellence is a tube amplifier with the midrange clarity, power, and dynamics that have made BAT one of the most respected brands in high-end audio.

All you need to do is listen!

Output per channel at 8Ω/4Ω: 60W / 60W

Conversion to Mono: Factory or wire kit

Output in Mono configuration 8Ω/4Ω: 120W / 120W

Frequency response: 8Hz to 200kHz

THD at full power: 3.0%

Input impedance – Stereo version: 215 kΩ

Input impedance – Mono version: 108 kΩ

Gain (Nominal into 8Ω): 25dB

Tube complement: 2x6H30, 2x6SN7, 2×6922, 4x6C33C-B

Power cords: 1

Remote control: No

Power consumption (idle/full power): 400W/800W

Dimensions (in): 17″W x 8″H x 16″D

Dimensions (mm): 431W x 203H x 406D

Weight: 48Lbs/21.8kg



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