Thanks for the kind words. Its a prototype in the sense that the layout needs finalised, but in terms of tonality, thats it really.
It will give quite a bit more gain than in the video above - enough for rock anyway. It's also really nice into an already overdriven amp to saturate your tone.
I'll record more clips tomorrow with higher gain settings.
If anyone is interested, it's point to point wired with the same attention to detail and quality you'd see in my amps (or any quality handwired amp). They're built to order but I can build these quite quickly, so there is only a short lead time. In other words, they're available to buy now (PM for details).
btw, here's the amp I used in the above video set with more gain. I'm happy with the way it turned out - 10w class A from a single EL34...
http://www.youtube.com/watch?v=Ut38iY4-h7o