Hey, Myles!

I recently picked up a Radial Tonebone "Plexitube" pedal.

It uses a 12AX7 in a low-voltage/"starvation" design...

I'd like to know if trying different preamp tubes in it will give me different gain/overdrive responses, allowing for greater response to changes at the guitar's volume-knob for cleaning-up and vice-verse...

Or, is the pedal's gain/overdrive/distortion more due to its SS circuits, and thus less likely to be affected by any tube-swapping?

I want an idea of how worthwhile it would be to open it up to get at the internal tube-socket (not exactly as simple as it could be) and swap various tubes in and out...

Thanks!

Wow, that was quick!

I also recently picked up a Fuchs Lucky 7 head; what a cool and unusual amp! (Particulalry its being a single-ended Class-A amp using an EL34 instead of the usual EL84, 6V6, etc., and using kinda hefty transformers and high-grade components.)

What preamp, driver, and output tubes would you recommend for the Fuchs Lucky 7, for both playing in a band setting (through a 2x12 cab), and getting as wide a range of dynamic response from it as possible?

I like to "play the amp", setting the volume higher than I might intend to play, often actually diming it- and then using my guitar's volume-knob and my "touch" to clean-up and vice-verse.