Vintage Tube Amp

Vintage Supro Thunderbolt Tube Amplifier from 1965. Has the original vintage Sylania tubes that sound great. 3 prong power cord was added for safety. The back top board had been removed in the past to open the amp up.

Up for sale, a 1965 Supro Thunderbolt model S6420 combo amplifier in good condition and in perfect working order. This perennially popular vintage tube amp was made in the USA by Valco, the parent company which also produced amps under the National, Oahu, and Gretsch banners among others. Lightly compressed, focused, and delivering an elegant, touch-sensitive overdrive that’s sonically distinct, the Thunderbolt pushes roughly 35 watts through a pair of 6L6 power tubes and a Jensen C15P speaker. For everything from clean, wooly rhythm tones to saturated tube roar further up on the volume dial, the Thunderbolt delivers a pure sound with a simple yet ingenious circuit and only two knobs for Volume and Tone. Notable for being an early example of the Thunderbolt with a rectifier tube and sweet, tube driven “sag”, the amp has a 5U4 in the rectifier position, along with a pair of 5881 (6L6GC) power tubes and a pair of 12AX7 valves in the preamp. The speaker is the original Jensen C-15P ceramic magnet 15 driver, and the date stamp on the edge of the frame is from the 18th week of’65. The circuit is mostly original, with stock transformers that date to’65, and CTS pots that have visible date codes from the 16th week of 1965. The power supply features a replacement multi-section can cap, with just a couple additional modern caps inside the chassis to ensure optimal functionality. Cosmetically the chassis retains the majority of its black silkscreened graphics, and the chrome exhibits some areas of surface rust through the plating. The cabinet features the original blue/gray textured covering with some wear through the covering on the bottom enclosure edges and some light staining of the silver sparkle grillcloth. It’s missing the original Supro logo.

Original speaker and power tubes. This vintage Supro Thunderbolt combo amp is a true gem for guitar enthusiasts. With its powerful 35 W output and vacuum tube technology, it provides a warm and rich sound that is perfect for any electric guitar. The amp features one speaker and one channel, with a model number of S6420 and a manufacturing location of the United States. It is suitable for use with electric guitars and boasts a classic Supro brand. The Thunderbolt S6420 is a rare find for collectors and musicians alike, with its unique tone and history. Whether you are a seasoned player or just starting out, this combo amp is sure to impress. Don’t miss your chance to own a piece of music history with this vintage Supro Thunderbolt combo amp.

Up for sale a 1965-66 Supro Thunderbolt amplifier. Amp is in good condition with normal use. Very clean chassis as you can see in the photos. The amp is all original, sounds great and idles quietly. Original transformers and speaker are there. Vintage Power Tubes and RCA preamp tubes. Covering has some scuffs and scrapes etc. As you might expect. Please see photos for condition. Great bluesy sounding amp, Some mighty 35 big sounding Watts!!! Please check my other items for more great gear.

Up for sale, a 1965 Supro Thunderbolt in excellent condition and in perfect working order. This legendary tube amp was made in the USA by Valco and comes complete with a fresh compliment of JJ tubes. Lightly compressed, focused and incredibly rich sounding, the Thunderbolt pushes 35 watts through a pair of 6L6 power tubes and a Jensen C15N speaker. For everything from clean, wooly rhythm tones to saturated tube overdrive further up on the volume dial, the Thunderbolt delivers a pure sound with a simple yet ingenious circuit and only two knobs for Volume and Tone. This is the earlier iteration of the Thunderbolt with a tube rectified circuit that has that quintessential sag. The circuit is thoroughly serviced and extremely clean, with both transformers dating the amp to 1965. The preamp has been fully recapped to ensure the amp responds as per factory spec and two new Alpha pots were also installed. The chassis is notably clean with chrome that shows only light surface patina and original black silkscreen graphics and knobs. The amp has been retolexed in correct “midnight blue vinyl” with silver sparkle grillcloth. There is some wear on one side of the cabinet and one notable spot on top where it appears the texture of the tolex melted. If you’re looking for the essential Valco/Supro tone for recording or live use, look no further than the Thunderbolt! Check out our shop “Mike & Mike’s Guitar Bar, ” and please let us know if we can answer any questions! We use double thick boxes, 1″ foam, and industrial 1/2″ bubble wrap to assure that your amp arrives safely. International orders will be declared as merchandise, and the value of merchandise will be declared as the amount paid. We cannot declare anything as a gift or for a lesser value. The item “1965 Supro Thunderbolt S6420 Vintage Tube Amp 1×15 Jensen C15N” is in sale since Sunday, December 10, 2017. This item is in the category “Musical Instruments & Gear\Guitars & Basses\Guitar Amplifiers”. The seller is “mmguitarbar” and is located in Seattle, Washington. This item can be shipped worldwide.

• Brand: Supro
• Amplifier Type: Combo
• MPN: Does Not Apply
• Number of Channels: 1
• Impedance (ohms): 8ohm
• Type: Electric Guitar Amplifier
• Amplifier Technology: Vacuum Tube
• Model: Thunderbolt S6420
• Country/Region of Manufacture: United States