Marshall Valvestate 8100

[Neal Saenz]

This is a single tube preamp set up and I think the tube maybe getting old and weak. The head seems to have lost it's low end rumble and now all I get is a weak hi gain sound from it. And would a thick tang Sovtek would bring back that low end rumble while not sacrificing too much gain?

[rnolan]

Does sound like the tube needs replacing. Whatever tube you pick get it both Balanced and Matched (http://adadepot.com/index.php?topic=547.0). I'd go with a Mullard long plate, but then they're my favourite tube (no secret there LoL).

[MarshallJMP]

Most of the gain is made by a pair of led diodes,the tube just warms up the sound.

[rnolan]

So MJMP does it sound like it's more than just the tube then ?

[MarshallJMP]

No i do think it's the tubes since BC doesn't talk about gain loss,just tone loss.

[Neal Saenz]

Thanks guys, it definitely was the tube.

[MarshallJMP]

Ok so all good now?

[rnolan]

Cool, easy to fix then  :thumb-up: