Extra gain stage from extra triode

[Spitfireb]

Well I'm in the process of building my own project amp. I found a old Mono amp on eBay and bought it so I had something to start with.
So i decided to make a modified Fender 5c3 deluxe. But instead of having 2 inputs, I was thinking about using the other half of the twin triode as an extra gain stage. I've heard of people doing it but cant find how. Any ideas?

[MWJB]

Go to Hoffmanamps.com, library of information, check out "Hot Switch Mod" for 5F6A/JTM45.

5C3 has little headroom to start with, I doubt that if you had the extra triode wired up in series that you would want to have it like that all the time.

[Spitfireb]

Thanks alot! any other good mod ideas? This amp is really just for experimenting, trying to figure out what sounds good.

[MWJB]

Build it with a cathode biased preamp input triode, not the grid leak.