This is a vintage 1966 Supro Thunderbolt model S 6420 electric bass guitar amplifier. This particular example is in very fine all original condition, and is in particularly excellent cosmetic shape. Though originally intended for bass, the Thunderbolt has since become one of the most popular vintage guitar amps. Great examples are somewhat hard to come by, and whether you’re having a problem finding studio magic or that missing piece of the puzzle that is your live rig, this would be a fantastic solution.
Transformer Codes: 5246607
Speaker Code: 220610 (Jensen, 1966)
The Thunderbolt Amp utilizes: (2) 6L6 and (2) 12AX7 tubes through an original 1 x 15″ Jensen speaker. The original tolex is in near perfect condition with only a few scuffs and snags. The chrome control panel is very clean, and the corresponding screened text is very nice. There is little oxidation on the hardware. The thin white stripe/band is very clean, intact, and nice. The grill cloth is in perfect structural condition, and the tolex is in correspondingly excellent shape. Other than (2) 12AX7s and a few replaced caps, this well-preserved example is all original and has all the original transformers, the original power tubes and power cable. The original 15″ Jensen speaker is in excellent shape and sounds amazing. The cone is original, and it does not exhibit speaker fatigue nor voicecoil distortion.