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



To contact Granger Amplification

(205) 774-0350

Granger Amplification LLC
132 Pinecrest Rd
Hueytown, AL 35023-1321

For after-hours support please use the contact form to email us.

For Granger product-related questions, sales inquiries, custom amp options and customer support, please send us a message from the form to the right, or call. Please leave a short message if you don't reach us right away. Visits to the shop are by appointment only. Please email, or call ahead to schedule.

Shop Hours

Monday - Friday: 9:30am - 6:00pm CT
Saturday & Sunday: CLOSED

Current shop time:

Current, average turnaround times

For stock amp builds (as of 10/01/2016): 8 weeks from date of first cleared deposit/payment.

For custom amp builds (as of 10/01/2016): 10 weeks from date of first cleared deposit/payment.

For repairs & modifications: 7-10 business days (non-stocked parts orders can extend this time).

For basic servicing (retubes, biasing, etc.): Same day (your tubes), 5 business days (our tubes)

We offer Expedited (Rush) Service at a premium rate of $50/half hour.

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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 Plexi recreations, Lightning, Trainwreck, other amp builds, amp mods, and repair on most tube amps. All trademarks are owned by their respective companies and are only used herein for historical references. - guitar amplifier, amplifier, vintage plexi, guitar, amp, amps, builder, for sale, fs, repair, mods, hand, wired, tone, custom amp, custom amps, amp mods, voltage regulation, variwatt, variwattage, modifications, amplifier, handwired, point to point, tube, vacuum tube, valve amp, kit build, amp kits, made in usa, marshall, fender, hiwatt, vox, jtm45, jmp, jcm, superlead, plexi, 18 watt, 50 watt, 100 watt, single ended, 5E3, bassman, matchless, trainwreck, epiphone valve junior, blackheart, tweed, deluxe, curt granger, birmingham alabama