I mentioned this breifly over in the Amps forum, but I thought I'd expand/expound here. I'm looking at putting together a design for a Class A, push-pull, relatively low power amp. The basis for my design will be the AX84 P1 High Octane, with a few twists and turns. Based on my research so far, I think that a plate voltage of about 250V is in order. Looking at the AX84 schem's, it would seem that I would want to use a power transformer that has about 190-0-190 secondary windings (from a 115V primary), but I'm having trouble locating a PT to do the job. What I want is something that will handle the current demands of two octal power tubes (figure 6L6GC's as a starting point, but if I could squeeze in KT88's, I'd like that) and say, 4-6 noval preamp tubes (12AX7/12AT7/12AY7/12AU7--obviously the AT and AU draw a lot more current than the AX/AY's). Can anyone suggest a suitable transformer? The closest thing I've found is the Hammond 363CX (180-0-180, 250 mA), but it doesn't have a 6.3V filament tap, just a 5V filament tap. Mercury doesn't seem to offer specs on their site, but maybe I'll drop them a line.