trinityamps.com

Hi everyone,

I’ve been using a TRIWATT build for a few weeks now, and I’ve noticed something odd: after about 20–30 minutes of playing, the overall volume drops slightly, and the tone gets a bit dull compared to when the amp is first powered on.

I’m running EL34s with a standard bias setup, and the voltages look stable when I check them cold. Speakers and cables are fine (tested with another amp).

Has anyone experienced a similar “warm-up tone loss” with the TRIWATT? Could this be related to tube drift, a specific component heating up, or something in the power section?
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Any ideas on what I should check first would be really helpful.