THD Univalve guitar amp - $550 (South Buffalo)

Mariemont Ave near South

condition: excellent

make / manufacturer: THD

model name / number: Univalve

size / dimensions: 15.5" 8.75" 10.75"

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This was the first boutique lunchbox amp to make it to the main stream. Built like a tank and sounds great. Quite loud for 15 watts, can keep up with drums no problem. Sits between Marshall and Fender type tones, swapping tubes can help it lean in one direction versus the other. Great shape, never had an issue. Ready for a test drive.

√ Class A 15 watt amp.
√ Takes all types of tubes: 6L6, EL34, KT66, KT77, KT88, 6V6 and EL84 (with adapter).
√ Can swap power tubes without needing to bias amp.
√ Has built-in attenuator.
√ Line out is part of the attenuator, power tube is included in tone.
√ Low voltage switch for different tone; and at a lower volume.
√ Light attenuator for different type of attenuation.

post id: 7916737925

posted: 2026-02-21 18:16

updated: 2026-05-08 16:53

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THD Univalve guitar amp - musical instruments - by owner - sale -...

This was the first boutique lunchbox amp to make it to the main stream. Built like a tank and sounds great. Quite loud for 15 watts, can keep up with drums no problem. Sits between Marshall and...