After many years I retubed my MP-1 mkIII preamp (using as linestage only). I found someone selling NOS RCA (352) for around $20 per and thought I’d take a chance.
The tubes came in white boxes, if anyone knows Of that indicates anything.
I’m getting a scratching sound when changing volume via remote, as well as getting some noise taping on some of tubes. 2 had loosened bases as well, but don’t seem to be microphonic.
I’ve moved tubes around trying to find locations where the microphonics don’t aren’t heard tapping on tubes, to some success.
Any insights appreciated.
The tubes came in white boxes, if anyone knows Of that indicates anything.
I’m getting a scratching sound when changing volume via remote, as well as getting some noise taping on some of tubes. 2 had loosened bases as well, but don’t seem to be microphonic.
I’ve moved tubes around trying to find locations where the microphonics don’t aren’t heard tapping on tubes, to some success.
Any insights appreciated.