Hi all,
I hope this is ok because I have a query about an amp that is not BYOC. I've started using my Ceriatone 18watt TMB EF86 a bit more and I've noticed that it has a pretty loud hiss in the TMB channel. The hiss gets louder as you increase the master volume quite considerably. You don't really notice once you start playing and it has a very nice tone but the hiss is pretty annoying when you stop playing. I've just put new preamp tubes in and use the tube Shields which doesn't seem to make a difference.
I'm also using shielded wire on both the TMB input and the EF86 input and they are properly grounded. I've checked over everything in the layout and it all seems exactly as it should be so I'm a bit stumped. Are they just naturally noisy Amps? It also uses carbon comp resistors for the whole thing so I'm wondering if that is causing issues?
I'd ask on the Ceriatone forum but that thing is dead.
Any ideas? I'll probably get some photos up soon.
Thanks for any help.