Supro S6420+ 1×15 Supercharged Thunderbolt Plus

The Supro Thunderbolt Plus amplifier adds switchable power amp topology to the legendary 1964 Supro Thunderbolt, giving you the original 35-Watt Class A Cathode bias sound as well as beefy 45-Watt and 60-Watt Grid bias modes for additional headroom and tonal variation. This unique design is implemented via a three-way selector switch on the front panel.

Normal and Extra-hot input options, combined with a wide range of available gain on tap, allow you to fine-tune the texture and response of this amps massive sound. Turned all the way up, the Thunderbolt 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 guitars 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 modes faster transient response and ample headroom is wonderful for pedals, and brings the Supro sound loud and clear to any size venue.

Massive custom transformers and lightweight, vintage-correct cabinetry–combined with the best sounding 15 guitar speaker money can buy–put the Thunderbolt in a class of its own. With the amp turned all the way up, chords ring with exceptional clarity and definition amidst copious amounts of tube overdrive and output-stage saturation. The variable power switching found in the Thunderbolt Plus model is an over-the-top hot-rod custom luxury guitar experience, decadently brought to you by Bruce Zinky and Dave Koltai.

• All-tube Supro circuit
• Normal and Hot inputs
• Unique Switchable Wattage
• 35-Watts Class A w/ Tube Rectifier
• 45-Watts Class AB w/ Tube Rectifier
• 60-Watts Class AB w/ Silicon Rectifier
• 115 Supro TB15 speaker
• 2x 12AX7EH
• 2x 5881 / 6L6WGC
• 1x 5U4GB Tube Rectifier
• Cab Size: 23 5/8 x 19 x 10 1/2
• 45lbs
• Blue Rhino Hide
• Assembled in USA