I just used inductors from digikey. So far so good. I haven't plugged a mic into it yet (I just completed stuffing my board) but after running tones through it, it might be a little more interesting than I was 1st thinking. There's a TON of gain avaiable from this amp and clean too. I found a slight rise in upper mid range which I believe might add a bit of character. Of course, I'm going to bastardise my pre's by using an output circuit to balance with transformers... :green: