FYI, for the 12ax7's, consider putting in the Groove Tube 12ax7m's. these are mullard copies. I have bought a bunch of them and find that they really make a welcome change...depending on the amp. I compared them to JJ's, EH's, sovteks (yuch!) and some chinese ones I had. I ended up putting them in V1 and the phase inverter in all my amps. Nice difference in Marshall JCM 800, huge difference in Fender Super, slight difference in Fender Hot Rod Deluxe. The sound just opens up, it takes out any unbalances in your tone (i.e. mids too hot, etc) and for me, it gave my amp a almost 3D quality that it didnt have before. I really liked them. THey're spendy..but worht it. But save your reciept as I have heard of a few problems with them. You have a 6 month warrenty.