This might be my first post. I lurk here often for amp tips. I stuffed a Champ Micro into a Marshall MG10CD a few months ago and have the itch to make a 5E3 6L6. I took robrob's optimized 5E3 and added combined it with the Proluxe build on his site. How is this? Here is one with the Cathode/Fixed Bias Switch Mod For the PT and OT I went with the ones robrob suggested. That may change. When I actually build it, I'll have a 4, 8, 16 ohm switch Currently, I am between the Trinity Amp or BootHillAmp kits. Thanks!