1968 Supro Thunder-Bolt bass amp all tube - $800 (Myrtle Creek)

1968 Supro Thunder-Bolt bass amp all tube 1

1968 Supro Thunder-Bolt bass amp all tube 1 thumbnail

condition: good

make / manufacturer: Surpro

model name / number: Thunder Bolt model 6420

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This is a 1968 vintage Supro tube amplifier, model 6420 Bass amp with original 15” CTS speaker (dated 1968)… cover is great, no tears or damage… powers up and plays… control are good, tone control a little “scratchy”, but this has been stored for 13 years and could use some light service… sold as you see it… $800 cash, firm.

post id: 7933659015

posted: 2026-05-11 13:26

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1968 Supro Thunder-Bolt bass amp all tube - musical instruments - by...