PCE/TG Tube Amplification - Anyone tried this?

[spenoza]

OK, so vacuum tubes take up a lot of space and you'd have to break out the case a bit, but I wonder what kind of warmth tube amplification would give the PCE. Anyone tried this yet? Replacing the amplifiers with tubes?

[Turbo D]

I haven't tried it, haha. I have some spare tubes in my garage though. I wouldn't really know how to go about it though or if my tubes would work. The ones I have lying around are just replacements for my guitar amp.