Welcome to Granger Amplification. We manufacture high performance vacuum tube amplifiers.



Ordering a Granger Amplifier:

Granger Amplification features online ordering for your convenience. Each amplifier product page has an Add to Cart button. Checkout and payment is processed securely using PayPal and 256-bit encryption. Any transaction from our site is secured via 256-bit SSL encryption from GoDaddy.com as well. You can pay online with either a major credit card, or directly from your PayPal account. 6 month, no interest financing is also available with PayPal's Bill Me Later® service.

You can also make a deposit to get your order started. The remaining balance and shipping will be due when the amp is completed and ready to ship. Please use the buttons below, or call us at (205) 774-0350 to discuss other payment methods.


I have read the Purchaser & User agreement.


I have read the Purchaser & User agreement.

If you have questions or additional instructions after your purchase you may call or email.

Other Payment Methods:

You can also telephone, fax, or mail your order.

To order by phone*, call (205) 774-0350.
To fax your order, use our order form. Print out the form and complete it.
Fax it to (205) 774-0351.
After receiving fax we will contact you to confirm.

We also accept personal checks and money orders. If paying by check, please make payable to Granger Amplification, and mail payment, along with completed order form to:

Granger Amplification
132 Pinecrest Rd
Hueytown AL 35023-1321

Please note there will be a waiting period for checks to clear our bank. We charge a $40 fee for returned checks. DO NOT mail cash (only accepted in person). Please contact us when mailing payments so that we will be made aware of it.

Purchaser & User Agreement:


Please read the following in its entirety:

All Granger amps are built one at a time to order. On average it takes 8 weeks to build, test, burn-in, and ship. Special options, custom orders, parts availability, supplier mistakes, and
peak demand times may extend this time. Our turnaround time is not a guarantee of when the amp will ship - we DO NOT rush our work! When you complete payment to us you are entering a binding contract to have the amp constructed and shipped. All sales are final. We offer a lifetime warranty on workmanship and most components to the original owner (see warranty terms here).

  • This is an electronic device containing extremely high voltages - it can kill you - seriously!
  • Do not go inside the amp unless you are qualified to do so - lethal voltages are present and you or someone with you could be seriously injured or killed.
  • Unauthorized modifications will void the warranty. In doing so, user assumes all risks. Please contact Granger Amplification before making any modifications.
  • Do not expose the unit to moisture or damp conditions.
  • Do not operate the unit if you have been or expect to be near water in any form.
  • Do not place any foreign objects near, on, or around the amplifier. This includes open beverages, food, or anything else that could enter the amplifier and cause damage.
  • All Granger amps feature a true Earth ground pin - do not remove or bypass this connection in any way - be sure you are plugging into an outlet with the ground pin connected to true Earth. Failure to do so will place the operator at risk of serious injury or death.
  • The rear side of the amp (near the tubes) will be emitting heat when operating - avoid this area. Do not place any combustible objects near the heat.
  • Do not touch the tubes (which can get very hot, +200 degrees F.) while the amp is on - You can or will get burned.
  • Do not operate near small children, whether they are being supervised or not. Accidents can happen.
  • Always wear adequate hearing protection, or limit your exposure. High sound pressure levels can damage your hearing during extended periods of use.
  • By purchasing this product you are agreeing that you have read, understand and will follow these and all reasonable product safety steps, and any misuse of the product both voids the warranty and releases Granger Amplification from any liability that may result from misuse.
  • If you ever have a concern or problem after purchase, contact Granger Amplification for a review of the amp, or refer to a qualified service technician - DO NOT GO INSIDE.
  • Each amplifier is custom built per order, and therefore the stated turnaround time is only an estimate. Special options, parts availability, supplier mistakes, and peak demand times may extend this time. When you complete payment you are entering a binding contract to have the amp constructed and shipped.

The order process is initiated upon completion of payment. Once payment has been made it is understood that you have read and abide by these policies. Thank you for reading. Your safety is our top concern when using our products.

Other Policies

Please refer to our new Policies page for more information regarding warranty and non-warranty service, shipping, and other general policies.




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All content copyright 2007-2017 by Blue Nite Productions. grangeramp.com is the website of Granger Amplification LLC, a company that builds quality, custom amplifiers, one at a time, at very reasonable prices. Our focus is on producing all-tube, hand wired amplifiers based on proven designs such as vintage Marshall and Fender products, and other boutique amps, while charging a fair price. We also do kit building, modification, and repair work. We specialize in vintage amp builds, service and repair, and amp mods. Site design and hsoting by Curt Granger for Blue Nite Productions. All trademarks are owned by their respective companies and are only used herein for historical references. - guitar amplifier, amplifier, guitar, amp, amps, builder, for sale, fs, repair, mods, hand, wired, tone, custom amp, custom amps, amp mods, modifications, amplifier, handwired, point to point, tube, vacuum tube, valve amp, kit build, amp kits, made in usa, marshall, fender, jtm45, jmp, jcm, superlead, plexi, 18 watt, 50 watt, 100 watt, single ended, 5E3, bassman, matchless, trainwreck, tweed, deluxe, curt granger, birmingham alabama