Features 6SN7 preamp tubes, 2x 6V6s and 2x 6L6s in the power tube section. 20 watts/45 watts/70 watts Description Product Description An original circuit from Brad with a set of 6SN7 preamp tubes, 2x 6V6s and 2x 6L6s in the power tube section. The McFly features 20 watts of brilliant American tweed inspired harmonic richness and allows the user to switch to 45 watts of clean headroom using the 6L6 output tubes. As expecting from Jackson Ampworks, we couldn't leave well enough alone and had to do something even bigger and better! 70 watts when blending the 6l6s and 6v6s together! The layout is Volume, 6 position body switch to dial in some tight fat low end, master tone and power scaling allowing you to go from 70 watts down to 1/8th of a watt.