All-tube two-channel 35W combo amplifier that adds switchable power topology (45W or 60W) implemented via a three-way selector switch on the front panel to the model renowned for its bold, full-range sound and up-front, honest midrange, covering a remarkable spectrum of vintage tone powered by two 6L6 tubes while wringing every ounce of personality from whatever guitar is plugged in. True to the original ‘64 version of the Thunderbolt, a 5U4 rectifier tube is employed to deliver that unmistakable high-powered vintage sag. Normal and Extra-hot input options, combined with a wide range of available gain on tap, allow user to fine-tune the texture and response of its massive sound. Turned all the way up, the combo exhibits nearly zero self-noise; yet it puts out enough volume to be easily heard on large venue and theatre stages, with overdrive completely controlled by the guitar’s volume knob. The 35-Watt and 45-Watt modes both deliver the sag and bluster of the 5U4 tube rectifier while the 60-Watt mode uses a silicon rectifier to unleash maximum Thunderbolt power. The 60-Watt mode’s faster transient response and ample headroom is wonderful for pedals. Massive custom transformers and lightweight, vintage-correct cabinetry is combined with the 15” Supro TB15 guitar speaker. Dimensions: 600 x 480 x 270 mm. Weight: 23 kg.