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Background noise

Hello folks. I have a Shindo Monbrison, a wonderful preamplifier, with a wonderful phono section. That said, I noticed a fairly high level of background noise when I turn up the volume without playing music (and this doesn't change by unplugging the interconnects). When the volume control is at its maximum level, you even listen to a little whistle.

Is it normal for a tube preamp or do you think there is a tube problem or another issue? I never experienced this problem in the past, but I've always used SS phono sections.

thanks.
ggavetti

Showing 1 response by isanchez

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isanchez
276 posts
 
I noticed a fairly high level of background noise when I turn up the volume without playing music (and this doesn't change by unplugging the interconnects). When the volume control is at its maximum level, you even listen to a little whistle. Is it normal for a tube preamp or do you think there is a tube problem or another issue?

My tube preamp is absolutely silent with the volume all the way up and putting my ear against the speakers. Of course, everything is turned on. Considering that my preamp has six tubes, I was very surprise by this total silence.

I'm not sure what the problem would be, but it is not normal to have such level of noise. Since yours is a second-hand unit, I would probably start by replacing the tubes.

Best,

iSanchez

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