DIY tube guitar amplifier DVD set+Book Make your own amp EL34 6L6 12AX7 Fender
Project #2: "Big Boy", 45-60 Watts push-pull channel-switching amp. This spunk can also use various power tubes without any modifications: 6L6, 5881, 6550, EL34, KT66, KT77, KT88. 45 Watts with a pair of 6L6 and 60 watts with a pair of EL34.