THD UniValve - User Manual

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THD UNIVALVE INSTRUCTION MANUAL 1

THD UniValve

In s tructio n Manua l

Thank you for your purchase of the THD UniValve amplifier! The THD UniValve is a

Single-Ended Class-A amplifier head with a single output tube that can be switched at

will among many octal-based power tubes, including 6L6, EL-34, 6550, 6CA7, 6V6,

6K6, KT-90, KT-88, KT-77 and KT-66, for different tones without re-biasing the amp.

Likewise, the two preamp tubes can be any combination of 12AX7, 12AT7, 12AU7,

12AY7 or 12AZ7. The UniValve delivers tones from smooth and clear to very aggressive

overdrive. It is easily capable of driving a 4x12" cabinet, yet quite small and light.

Finally, it has a built-in Hot Plate® Power Attenuator that allows for full output

distortion at almost any volume. The unique combination of our touch-sensitive input

circuit and the wonderfully active and reactive tone control section (that we slaved a year

to perfect) make for a front-end that really responds to subtle and not-so-subtle changes

in the signal being fed into the amplifier either by the guitar or any effect that may be

between the guitar and the amplifier.

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Summary

Details the various inputs and controls located on the front panel, including gain, tone, and volume adjustments.

Explains the self-biasing feature and lists compatible octal-based power tubes for tonal variety.

Discusses the flexibility in using various dual triode preamp tubes for different sound characteristics.

General