Hello! I picked up a C-100-CR at Guitar Center for a great deal. I think it’s a 1993. Sounds great and works well as I think it should. Can’t help but think of there might be some updates that can be done that you guys suggest or it perfect as is/no mods needed? I’m willing to send it down to you guys to do a once over, I’m in the CA Bay Area. It has all JJ preamp tubes, I just ordered some Sovtek 12ax7WB’s for V1 and V5 as shown on the tube chart posted previously.
Thanks! Nathan
Hi Nathan,
There wouldn’t be any modifications or updates for that amp. It’s amazing as is.
We do have some updated information on the tubes though.
V1 - A low microphonics, brighter quality 12AX7 like a Tung-Sol 12AX7 is best in that position.
JJ’s 12AX7’s will be perfectly fine for the rest of the 12AX7 positions.
JJ’s brand are also good for 12AT7/12AU7 positions.
We recommend Mullard for the EL-34’s.
I hope that helps.
Thank You,
Terry
Excellent! Thank you for the response! When I get a set of Mullard el34’s will I need to bias the amp or is it fixed bias?
