Used Gear Hunter

Used Gear Hunter

Used Supro Thunderbolt S6420 for sale

2 listings from 2 marketplaces, refreshed continuously.

Supro Thunderbolt S6420 1967

Cheapest right now

£743

Supro Thunderbolt S6420 1967

Chicago Music ExchangeChicago, IL, USA

Market price history

Median sold price · 2026-09-08 → 2026-09-28Min £743 · Max £1,035
£743£889£1,035

Available at

  • Chicago Music Exchange

    1 listing

  • Elderly Instruments

    1 listing

    £1,035

    Cheapest

Used Supro Thunderbolt S6420 by country

Current Supro Thunderbolt S6420 listings

Supro Thunderbolt S6420 1967

Supro Thunderbolt S6420 1967

£743Chicago Music Exchange

Chicago, IL, USA

Supro Thunderbolt S6420 Combo Amp (1965)

Supro Thunderbolt S6420 Combo Amp (1965)

£1,035Elderly Instruments

Lansing, MI, USA

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Used Supro Thunderbolt S6420 for sale — current listings across 2 marketplaces · UGH