I want to build an amplifier similar to the Marshall 50W / Fender Twin Amp but with some features that you'd expect in a modern amp; -channel switching and an effects loop. I have designed a pre amp stage, but will it actually work? Please let me know what you think! (The schematic is slightly too large for the web page so you may have to right click and save it, sorry.) View it here:

http://www.geocities.com/silurianshropshire/valve.html