The Amp Garage

Just out of curiosity, how would this amp sound if it had a Rocket pre with the fake pi? Just wondering if you might have tried this already. If so, what is that like. If not, is there any reason why it wouldn't?

Thanks G... I don't mind getting off topic a little, if you want to drop some knowledge on us... Even though the pre is not like the one I want to use, I am still interested in the why and how of the NFB... Btw... Is it also being used as a grid stopper? I think it could be for both. The circuit wor...

Rob - That is odd... wouldn't the 470k resistor and the 4.7k cathode resister combine for a series resistance as a grid stopper for stage 3 input... Maybe there is some sort of feedback being used here. I was more concerned with the power amp and supply sections. It is a great question though... Has...

Thanks for the response. Ok... How about this schematic... [IMG:1024:680]http://i946.photobucket.com/albums/ad304/dorrisant/QWxsZW4gQ2xhc3MgQWN0LmpwZw.jpg[/img] Can anyone try the power supply with Duncan PSU II? When I try this one in particular, I end up with low HT for the preamp section. Too low...

I would like to know how to calculate the power requirements for a single ended amp. I know that you simply add up the individual current draw from each tube... but here is the twist: one channel - four stage pre (two 12AX7s, pretty close to a Trainwreck Express) and one power tube (optional swap ou...