Vintage Tube Amp

Up for sale, a 1967 Harmony model 525 tube amp in excellent condition and in perfect working order. Made in Chicago, USA by Valco (the parent company known for producing the Supro, National, and Airline brands among others), the 525 is essentially a Supro Thunderbolt with the added benefit of individual Treble and Bass controls. Rich, powerful, and nuanced, the 525 pushes 35 watts through a pair of original RCA 6L6GC power tubes and an original Jensen C15P speaker. For everything from rich cleans and wooly rhythm tones to saturated tube overdrive further up on the volume dial, this Harmony delivers a pure sound with a simple yet ingenious circuit. The signature sizzle, drive, and subtle compression of Valco/Supro’s preamp design offers a very dynamic and articulate signal balanced by the warmth and fullness of the single 15 speaker. The circuit is very original, with CTS pots that date to 1967 and original impressively sized transformers as well. The faceplate retains its original gleaming chrome plating, with all of the original black silkscreen graphics and lettering, as well as a minty trio of chrome insert knobs. The Jensen C15P speaker has a near mint black speaker frame, gold foil label on the ceramic magnet, and date code from’67. The original black ostrich tolex is extremely clean and the grill cloth retains its vivid red racing stripes. The Valco-made Harmony 525 is a classic, oft-overlooked model with the same preamp, tube and speaker compliment, and rich tone as the Supro 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 ensure 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. We do our best to describe all items with honesty and accuracy, but to be sure, please. The item “1967 Harmony 525 Vintage Tube Amp 1×15 Supro Thunderbolt with Jensen C15P, Valco” is in sale since Monday, September 23, 2019. 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.

• Number of Channels: 1
• Number of Speakers: 1
• Model: 525
• Country/Region of Manufacture: United States
• Amplifier Technology: Vacuum Tube
• MPN: Does Not Apply
• Amplifier Type: Combo
• Brand: Harmony
• Suitable For: Performance

Up for sale, a 1964 Supro Thunderbolt with rare two-tone blonde and black tolex and a complete original RCA tube set. An Airline-branded variant, this amp is otherwise identical to its Supro-branded brother. This legendary tube amp was made in the USA by Valco, and is generally considered to be Jimmy Page’s amp of choice for crafting many of guitar sounds on early Led Zeppelin records. Lightly compressed, focused, and balanced, the Thunderbolt pushes roughly 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. The circuit is extremely original, and both transformers are stock, with original CTS pots that date to’64. Notable for being an early example of the Thunderbolt with a rectifier tube and sweet, tube driven “sag”, the amp boasts an original RCA 5U4 in the rectifier position, along with a pair of RCA-branded 6L6GC gray plate power tubes that are properly biased. The chassis has consistent light surface rust, yet all of the original black silkscreen text is intact, along with the stock pair of knobs. The speaker is an era-correct Jensen 15 C15N speaker, and this ceramic magnet speaker has an extremely clean gray frame and original foil label on the magnet. The cabinet retains its original two-tone tolex and salt and pepper grillcloth, with modest wear on the top of the enclosure and a few requisite scuffs and snags on the tolex as a whole. If you’re looking for the essential Valco/Supro tone for recording or live use, look no further than the rare Airline-branded variant of the venerable 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 ensure 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. We do our best to describe all items with honesty and accuracy, but to be sure, please. The item “1964 Supro Thunderbolt Airline-Branded Vintage Tube Amp Valco 1×15 with RCA 6L6GCs” is in sale since Wednesday, August 28, 2019. 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.

• Number of Channels: 1
• Number of Speakers: 1
• Model: Thunderbolt
• Country/Region of Manufacture: United States
• Amplifier Technology: Vacuum Tube
• MPN: Does Not Apply
• Amplifier Type: Combo
• Brand: Supro
• Suitable For: Performance

Up for sale, a 1965 Harmony H420 tube amp, a rare Valco produced and USA-made alternative to the famed Supro Thunderbolt! Produced in the same Valco factory as the Thunderbolt and marketed by Harmony to pair with their guitar line, the H420 is extremely similar in terms of circuit and layout to its more famous Supro cousin, with the added benefit of individual Treble and Bass controls. Rich, powerful, and nuanced, the H420 pushes 35 watts through a pair of original RCA 6L6GC power tubes and the original Jensen C15N speaker. For everything from clean, wooly rhythm tones to saturated tube overdrive further up on the volume dial, this Harmony delivers a pure sound with a simple yet ingenious circuit. The circuit is completely stock, with CTS pots that date to 1965 and original impressively sized transformers as well. The faceplate retains its original shiny chrome appearance, with all of the original black silkscreen graphics and lettering, as well as a minty trio of stock witch hat knobs. The Jensen C15N speaker has a near mint black speaker frame, gold foil label on the ceramic magnet, and date code from’65. The original black ostrich tolex is extremely clean too, with only a few requisite scuffs and light marks of wear on the edges of the enclosure. The H420 is a great workingman’s amp for half the price of a Supro 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 Harmony H420 Vintage Valco, USA-Made Tube Amp Supro Thunderbolt Variant” is in sale since Wednesday, August 29, 2018. 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.

• Number of Channels: 1
• Number of Speakers: 1
• Model: H420
• Country/Region of Manufacture: United States
• Amplifier Technology: Vacuum Tube
• MPN: Does Not Apply
• Amplifier Type: Combo
• Brand: Harmony
• Suitable For: Performance

The photos are part of the description. I mostly sell older, used items – expect them to show wear and have some flaws. I try to give the best descriptions I can. It’s possible that some items may have unobservable or internal problems or damage that I’m not aware of. I do not completely disassemble items for inspection. Make sure the address is up to date and correct. I avoid using UPS. I try to charge as close as possible to actual costs. The item “Vintage Thunderbolt 305 10 Meter Linear Tube Amplifier” is in sale since Sunday, July 29, 2018. This item is in the category “Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers”. The seller is “tubehapp” and is located in Daytona Beach, Florida. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia.

• Model: 305
• Modified Item: No
• Custom Bundle: No
• MPN: Does Not Apply
• Brand: Thunderbolt
• Non-Domestic Product: No

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

Up for sale, a 1966 Harmony H440 tube amplifier in exceptional condition and in good working order. Like all top-tier Harmony amps of this era, this amp was produced by Valco in the USA, parent company of Supro, National, Airline, and others. Both visually and sonically impressive, this massive 2×12 combo amp was Harmony’s most expensive offering of the era and extremely rare in any condition. Essentially a Supro Thunderbolt with dual 35 watt output transformers and a gigantic power transformer to sum the two sides, this amp is utterly unique and extremely powerful. Top it off with two matched pairs of vintage RCA 6L6GC power tubes and dual rectifiers and you’ve got one very cool amp. The original Jensen C12P speakers accentuate everything we love about vintage Valco preamps, with a color and tone stack that is unique in the vintage amp world. Nothing has the full, harmonic rich overdriven qualities of a vintage Valco amp and the H440 is one of the most revered circuits, with the quintessential Led Zeppelin tone. The tremolo also has a very strong chop to it and the reverb (from the small two spring tank housed in the original cardboard box) has a lo-fi, surfy quality that is ideal for’60s garage and psych tunes. The circuit is very original, with stock transformers and a virtually untouched preamp. An example of true point-to-point wiring, the amp retains its original tone caps and has CTS pots that date to early’66. Tube rectified and pushing roughly 70 watts through two pairs of 6L6GC power tubes, the amp boasts particularly large transformers given its output, and this adds tremendously to the power and punch that the H440 can deliver. A modern three-prong power cable has also been installed. The speakers are the original matched pair of Jensen C12Ps with clean black frames, original gold foil labels on the magnets, and date codes from the 8th week of 1966. Cosmetically, this amp is very clean especially given its size. The black silkscreening on the faceplate is very vibrant and mostly intact, and the chrome shines like new. The original tolex has the “ostrich” pattern seen on some’60s Supro amps and the stock grillcloth shows only limited aging. The polished chrome faceplate is also particularly free from wear. 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 “1966 Harmony H440 Vintage Tube Amp Valco-Made Supro Thunderbolt 2×12 Jensen C12P” is in sale since Wednesday, July 12, 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.

• Number of Channels: 2
• Brand: Harmony, Valco
• Amplifier Type: Combo
• Amplifier Technology: Vacuum Tube
• MPN: Does Not Apply
• Type: Electric Guitar Amplifier
• Model: 440
• Country/Region of Manufacture: United States
• Suitable For: Performance
• Impedance (ohms): 4ohm