JFALTERW

I live in Ormskirk, but practice in Preston. So NW England really. I'm not going through a great cab either, trying to get a better one. I have a peavey TVX 4 ohm which is showing its age, and a Behringer BA410(They're both 4 ohms btw. and i don't run them both at the same time, i've tried one and then the other) Not great cabs but all i've got atm...

It was second hand. Both Bias lights are fine, when warmed up and connected to a cab. So i don't believe it's the drive tubes. I wouldn't mind taking it to a tech, just a lil nervous if it needs nay work. I know tube heads are expensive to service :/ And i have had the gain all the way up, and it doesn't really distort or grind at all, just sounds very 'high gain' if that makes any sense...

Aye, but i don't. Thus my issue :'( I'm thinking a pre-amp valve or two has gone, but not sure. A bit of help from anyone who has had a similar issue would be fantastic!

Hey, recently got an Ampeg SVT-CL (lucky me) and have seen in plenty on vids how cranking up the input gain gives an overdriven/distorted signal. Yet try as i might i cannot seem to replicate this with my head. I use a Squier 70's vintage modified passive Jazz bass and have heard you only really get some grint if you have an active bass, but i'm not sure. Any and all help/advice would be great! Thanks again