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TH100 Dirty Channel Noise
Posted: Thu Apr 27, 2017 3:17 pm
by The Dirty Vacant
I just purchased the TH100 head, running with an open backed 2x12, around three months ago. In the last two weeks, I've noticed an increasing hum in the dirty channel. It stays when I turn down my guitar, switch to another guitar or take all pedals out of the loop and in front. The clean channel is perfectly quiet. Is this a preamp tube going bad?
Re: TH100 Dirty Channel Noise
Posted: Thu Apr 27, 2017 10:22 pm
by Les Paul Lover
The Dirty Vacant wrote:I just purchased the TH100 head, running with an open backed 2x12, around three months ago. In the last two weeks, I've noticed an increasing hum in the dirty channel. It stays when I turn down my guitar, switch to another guitar or take all pedals out of the loop and in front. The clean channel is perfectly quiet. Is this a preamp tube going bad?
It does sound like it.
Do you have any spare preamp valve to try out?