Used Gear Hunter

Used Supro Thunderbolt S6420 in the United States

Used Gear Hunter checks the United States's music shops and marketplaces every day. Right now there are 2 used Supro Thunderbolt S6420 listings for sale in the United States, from 2 sellers.

Updated 2026-11-10

Cheapest

£743

Typical

£889

Highest

£1,035

What a used Supro Thunderbolt S6420 costs in the United States

A used Supro Thunderbolt S6420 in the United States currently costs between US$997 (£743) and US$1,388 (£1,035). The typical (median) asking price is US$1,193 (£889).

Where to buy one in the United States

You can find it at Chicago Music Exchange and Elderly Instruments.

  • Chicago Music Exchange1 listing · from £743
  • Elderly Instruments1 listing · from £1,035

Used Supro Thunderbolt S6420 for sale in the United States now

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

Buying tips

  • Compare the asking price with the typical price above before you contact a seller.
  • Buying locally in the United States avoids import duties and cross-border shipping, and lets you test the Supro Thunderbolt S6420 before paying.
  • Ask for the serial number, recent photos and whether it has been serviced; check that it powers on and every function works.
  • Pay through the marketplace or a protected method — never by bank transfer to a stranger.

Questions

How much does a used Supro Thunderbolt S6420 cost in the United States?
A used Supro Thunderbolt S6420 in the United States currently costs between US$997 (£743) and US$1,388 (£1,035). The typical (median) asking price is US$1,193 (£889). Prices are checked daily on Used Gear Hunter.
Where can I buy a used Supro Thunderbolt S6420 in the United States?
You can find it at Chicago Music Exchange and Elderly Instruments. Used Gear Hunter lists them all in one place.
Is it worth buying a used Supro Thunderbolt S6420?
Studio gear like the Supro Thunderbolt S6420 holds its value well, so a used one in good condition is usually the better buy — and it sells on for close to what you paid.

All used studio gear in the United States

Used Supro Thunderbolt S6420 in other countries

Used Supro Thunderbolt S6420 in the United States — prices & where to buy · UGH