J27785005000001
There is discoloration around the input jack. Missing the manual.
Full Manufacturer warranty not applicable on all used products.

The Supro Thunderbolt Plus amplifier adds switchable power-amp topology to the legendary 1964 Supro Thunderbolt, giving you the original 35-Watt Class A Cathode bias sound as well as beefy 45-Watt and 60-Watt Grid bias modes for additional headroom and tonal variation. This unique design is implemented via a three-way selector switch on the front panel.

Normal and extra-hot input options, combined with a wide range of available gain on tap, allow you to fine-tune the texture and response of this amps massive sound. Turned all the way up, the Thunderbolt exhibits nearly zero self-noise, yet it puts out enough volume to be easily heard on large venue and theatre stages, with overdrive completely controlled by the guitars volume knob. The 35-Watt and 45-Watt modes both deliver the sag and bluster of the 5U4 tube rectifier while the 60-Watt mode uses a silicon rectifier to unleash maximum Thunderbolt power. The 60-Watt modes faster transient response and ample headroom is wonderful for pedals, and brings the Supro sound loud and clear to any size venue.

Massive custom transformers and lightweight, vintage-correct cabinetrycombined with the best sounding 15 guitar speaker money can buyput the Thunderbolt in a class of its own. With the amp turned all the way up, chords ring with exceptional clarity and definition amidst copious amounts of tube overdrive and output-stage saturation. The variable power switching found in the Thunderbolt Plus model is an over-the-top hot-rod custom luxury guitar experience.Power: 35 watts (Class A, with tube rectifier); 45 watts (Class AB with tube rectifier); 60 watts (Class AB with silicon rectifier)
Tubes: two 12AX7; two 6L6; one 5U4
Single channel
Two inputs
Speaker: 1x15 Supro TB15
Controls: tone, volume, 3-way power-amp switching knob
Blue Rhino Hide tolex
Dimensions: 23.6 in. x 19 in. x 10.5 in.
Weight: 45 lbs.
Assembled in the U.S.A.

Orders are generally shipped the following business day after payment is received. For example, if your order is placed AND paid for at 1 p.m. Eastern Time on Friday, Music123 will ship it on Monday. We are only shipping eBay orders via standard ground shipping at this time (3-7 business days for delivery once the item leaves our warehouse)**
International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.


Music123 only accepts payments for eBay orders through Paypal.


Music123 charges sales tax to orders shipped to the following states: Indiana, Missouri, Utah, and California.


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  • Returns

    45 Day Satisfaction Guarantee

    Our goal is your total satisfaction.

    New Gear: If you’re not satisfied, neither are we. If for any reason you’re not completely satisfied with your purchase of a new item, simply return it in its original condition within 45 days of purchase (see exceptions below) and we’ll give you a full refund. It’s that simple. Returned items must be in original, brand-new condition, showing no signs of wear or use such as belt-buckle or pick scratches, scuffs, dings or scrapes on the instrument or collateral materials. Items must also include all original packaging, manuals, warrantees and accessories or your return may be subject to a return handling charge. Please contact us for detailed return handling charges. Your refund will be promptly processed upon successful evaluation of your returned item from our trained category professionals. Refunds are made for product value only, excluding shipping and handling charges. If you received Free Shipping on your order, the value of the uncharged shipping cost will be deducted from your refund.

    Used Gear: If for any reason you’re not completely satisfied with your purchase of a used item, simply return it in its original condition within 30 days of shipment and we’ll give you a full refund. Items not returned in original condition are subject to a return handling charge. Select used item are not returnable.

    International Shipments: Our return policies for new and used gear also apply to international shipments. Please see any additional policies and information shipped with your package for more details.

    Exceptions: There are no returns on clearance, discontinued, vintage, demo and select used items. Additionally, the following items are returnable only if defective OR unopened - strings, reeds, computers, tubes, earbuds, earplugs, recorders, tin whistles, flutophones, "world" wind instruments, harmonicas, raw-frame speakers, drumheads, drumsticks, turntable cartridges, fog fluid, clothing/footwear, body jewelry, sheet music, cleaners, polishes and polishing cloths. Software/soundware, books, CDs, DVDs, and videos may be returned for credit only if they are in their original, sealed packaging. If defective, these items will only be exchanged for the same product. All returned woodwind and brass instruments incur a $10.00 sanitization fee. Returned bows are assessed a $4.00 restocking fee. Returned mouthpieces priced over $300 incur an $8.00 sanitization fee; the fee for mouthpieces under $300 is $4.00. Due to its return policies, you must contact Apple directly to repair, replace or return Apple products. Apple products may not be returned to us under any circumstance. Stringed instruments priced at $1999.00 or more, must be returned within 10 days of shipment.

    Requesting a Return: Contact our experts via eBay messages. Additional information on returns can be found on the paperwork shipped with your package.

    Send your returns to:

    Music123
    (Your RA #)
    4005 N Norfleet
    Kansas City, MO 64161-9231