I am going to be building my own bass head. It is going to be class A all tube and it basically going to be 2 amps in 1. One side will be about 300 watts and the other side is going to be 1000-1500 watts. I need to know a good place to get all the internal components. I have a good freind who built amps for BatCat for 5 years, but he doesnt know where to get the parts either. Any suggestions?