T talbotpat New member Feb 14, 2014 #2 In short, it depends on which Tweaker you are talking about. Tweaker 15: 2 x 6V6 Power Tubes 3 x 12AX7 Pre-amp Tubes Tweaker 40: 2 x 6L6 Power Tubes 3 x 12AX7 Pre-amp Tubes Tweaker 88: 2 x KT-88 4 x 12AX7 Other tubes will work, and Tweaker 15 is cathode bias, while the 40 and 88 are fixed bias and will require setting/adjustment when changing tubes. This thread will be useful as you consider options (if you are dealing with the Tweaker 15 http://www.mylespaul.com/forums/squawk- ... hread.html
In short, it depends on which Tweaker you are talking about. Tweaker 15: 2 x 6V6 Power Tubes 3 x 12AX7 Pre-amp Tubes Tweaker 40: 2 x 6L6 Power Tubes 3 x 12AX7 Pre-amp Tubes Tweaker 88: 2 x KT-88 4 x 12AX7 Other tubes will work, and Tweaker 15 is cathode bias, while the 40 and 88 are fixed bias and will require setting/adjustment when changing tubes. This thread will be useful as you consider options (if you are dealing with the Tweaker 15 http://www.mylespaul.com/forums/squawk- ... hread.html