Thanks to Stephen I have a new Tramp!
A combo style that takes a big fat bottle and pounds out sound.
It has no problem with bass, keyboards or pedals. So far I have had it plugged into every cab I have and it will stay on/in an open back 115.
Speaker is a WGS G15C
Using new stock tubes at this time but will be trying several others that I have. The KT88 makes the Tramp a monster. I love the Tramp but this new one is special and also has a second 9 pin base pre installed and some wiring done. It gives me a few options.
It has a huge fat sound, I love it.
Quote:
Amp is done. Here's how it works. In the end I went with an extra toggle switch for full flexibility & selection.
2 switches in the back.
1. Lo bias / Hi Bias
2. 5K OT impedance / 2.5K OT impedance
Since EL34 & KT88 can run on the same bias as 6L6, I left the stock set up in there i.e. 750 ohm for 6V6 and 560 in parallel with 750 for EL34 / KT88.
so to run KT88/EL34, you flip to HI Bias / 2.5K
to run KT66 flip to HI Bias / 5K
to run 6V6 Lo bias / 5K.