1966 Supro S6420 Thunderbolt. Although originally marketed for bass players, just like the Fender Bassman, the Supro Thunderbolt has similarly become a favorite of guitarists for its incredible tube tones. These amps put out 35 watts of through the stock 15″ Jensen C15NS speaker. Very good condition with minimal wear and sounds excellent. This amp delivers a fantastic tone with full, detailed cleans and a punchy, tweed-like natural tube breakup when cranked. A great vintage amp for the stage or studio!

Emerald City Guitars

Emerald City Guitars

Very Good
11 Years
Emerald City Guitars
Emerald City Guitars
Seattle, Washington
8:44 PM
10am-6pm Monday-Saturday Closed Sundays

We accept Cash, Visa, MC, Discover, AMEX, Paypal, certified cashier's check, money order and direct bank transfers.

As Emerald City Guitars continues to do more and more worldwide shipping our goal is to make sure your instrument or amplifier arrives intact. We take pride in our packing procedures using high grade packing materials and great care in assuring that our customers get their order quickly and safely. We make a point of forwarding all tracking information to our customers so they can stay informed on its progress pending arrival. We ship via UPS, Fedex and UPS. All shipments are fully insured through our private insurance carrier.

We offer a 72 hr approval on all guitar & amps (unless otherwise noted). Customer pays all shipping & insurance costs both ways unless otherwise negotiated by sales staff. Before returning any item, customers must call for a return authorization. Returned items must be in the same condition as when they left the store. Unauthorized returns will be refused & returned at customer expense. Returned items are subject to a 20% restocking fee.