Recently picked up another late 60s Traynor YBA-3 Custom Special. Years ago I had a great sounding Pepco 727 (Princeton/Deluxe clone), somehow the YBA-3 preamp reminds me of that old Pepco... So I started thinking, would a 4x6V6 Custom Special sound good for Guitar? I think so. Can the plates on 6V6's be run hot like Pete's approach with the YBA-3 and YBA-1A MKII? Can you get about 30-40w out of a quad of 6V6's?