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



Updated November 1, 2016

Warranty Service:

New Granger amplifiers are lifetime warranted to the original purchaser against failure of workmanship and materials, which covers any repairs required to bring the unit back to it's original factory stock condition. It excludes freight (shipping charges) to or from the factory. It does not include circuit updates, product feature upgrades, nor modifications. Our obligation is limited to restoring the unit to the original product specifications at the time of manufacture. This warranty excludes abuse (whether intentional or accidental), vacuum tubes, output transformers, blown speakers, cosmetics, physical damage (such as water or other foreign substances), shipping damage, or attempted repairs by anyone other than Granger authorized service facility or technician, unless prior authorization is granted by Granger Amplification.

No other warranty applies. This warranty applies only if the amplifier has not been damaged by accident, misuse or as a result of repair or modification. This warranty is not transferable. Granger Amplification LLC reserves the right to make any design changes without notice or obligation to incorporate these changes in products previously purchased.

Repairs under warranty are based on the sole discretion of Granger Amplification LLC or it's authorized agents. We reserve the right to suspend a warranty, nor service any unit which, in our opinion, has been abused, modified, or improperly serviced by unauthorized personnel, or if the customer has an outstanding, unpaid balance due. We reserve the right to substitute components of equal or improved quality for repairs when necessary.

Units being returned for service must be pre-authorized by Granger Amplification LLC. An RA number must be provided by us, and must appear on the exterior of the package or we reserve the right to refuse the package upon receipt. A copy of the bill of sale/invoice must be provided. COD's of any kind will not be accepted. Please contact us to obtain an RA Number.

Non Warranty Service:

Units being returned for service that are not covered under warranty will be serviced at the current bench rate in effect at the time of repair, plus parts required, plus any applicable sales tax. Amplifier/equipment owner is responsible for all shipping charges.

International Orders:

Shipping charges for international orders (outside the Unites States) are estimated at the time an order is placed, based on in-effect rates of our shipping carriers. However, due to rate increases and other extenuating circumstances beyond our control, the customer may be required to pay any additional charges to cover shipping expenses upon shipment of product. We will never intentionally profit from extra shipping charges, only what our carrier charges us, and a minimal amount to cover our packaging costs. We will provide a commercial invoice and customs forms as required by the carrier and the United States government. It is the customer's responsibility to ensure they have met their country's requirements to receive imported merchandise. We will in no way be liable for shipments that are held by customs due to customer's negligence in meeting the necessary requirements. The customer is responsible for all duties and taxes that their country may impose. Any item that is shipped to Granger Amplification that incurs duty/brokerage fees by the carrier must be paid by the customer before any work is done and item shipped.


Beginning May 1, 2015, all repair/service items checked in at our shop will require the customer to pay a $35 (cash), non-refundable deposit, per item, when items are checked in. In addition, we require the customer to sign a work authorization stating that they agree to our terms and policies. No item will be accepted until these conditions are met. Deposits for items shipped to us are at the discretion of Granger Amplification and will be considered on a per item basis before the item is shipped. Deposits paid on amplifier orders are considered a binding agreement to purchase amplifier, and no refunds will be paid if a customer defaults on remaining balance.

Credit/Outstanding Balances:

All balances must be paid in full before items are released to customer. No shipments will proceed until balances are paid in full. Any outstanding balances will incur a 15% interest charge per month until balance is paid in full. Balances on completed amp orders are due when the product is ready to ship and customer notified. Any amplifier order with an outstanding balance that is not paid within 15 business days will be sold to recuperate parts and labor expenses and any deposit/payments paid by customer will be non-refundable.

Storage/Abandonment Fee:

Any item not picked up or not shipped due to a balance being unpaid, after the customer has been notified, will incur a storage fee of $10 per month. Items left over 3 months become the property of Granger Amplification LLC and may be disposed of and/or sold as needed, without notice, to recover our expenses.

Standard Shiping Service

Each customer has the opportunity to choose from several shipping methods. Shipping charges are calculated at checkout, or by using the Estimate Shipping Charges function after adding a product to your cart. If for any reason Granger Amplification LLC deems the chosen shipping method to be unsuitable for the required shipment, we may select another carrier. We will attempt to keep your shipping costs as low as possible, or change carriers at our own expense.

Cost Calculation

Shipping Charges are based on item weight and package(s) size. There is a continual improvement on products to ensure the item weight and therefore the postage and packing charges are inline with actual costs. Postage and packaging prices are not set to make any profit from postage and packaging services, only to cover nominal expense of shipping materials and vendor fees. If you notice a discrepancy in weight of similar items displayed, please contact us so we may investigate and correct. Due to the nature of shipping requirements, sometimes the actual shipping amount may exceed the shipping charged during checkout, due to package size and insured items. In this event, we will inform you as soon as possible, and it may be necessary to invoice you for the difference.

Estimated Shipping Disclaimer

Please note that shipping charges are estimated and do not take into account multiple, over-sized packages or insurance. We estimate shipping costs in order to keep shipping costs as minimal as possible. Actual shipping charges will be calculated and added when your order is processed. If there is a significant increase in shipping your order will be held and you will be contacted. We apologize in advance for any inconvenience this may cause you.

If the shopping cart failed to properly calculate shipping cost and your shipping amount was not reflected in your online shopping cart receipt, we will calculate it manually only charging you our actual cost. If you would like to be notified about the shipping amount before we ship your order, please place a note to notify you in the "Special Instructions/Notes" field during checkout. This may be due to the service you selected being unavailable for your location, formatting issues, malformed Postal/Zip codes, items weighing more than 100 lbs. or your order being split into multiple packages.

Delivery Times

Items will be shipped as soon as possible (normally within 3-5 business days) and should arrive within the following timescales:
1. USA (1-4 days)
2. International (8-10 days)

These are not guarantied delivery times. Granger Amplification reserves the right to hold shipments until payments are posted to our bank. This includes, but is not limited to, the following: PayPal eChecks, credit card payments, and personal checks. If you require a guaranteed delivery date please contact us first so that we can discuss payment and shipping options.

You will become owner of the goods on delivery to you. Once the goods have been delivered, you will hold them at your own risk and we will not be liable for their loss, damage or destruction.

If you ask for items to be shipped to an address that is not the same as your payment card billing address, or if you any of your payment details are not verifiable, then additional delays may occur as we carry out further checks. This is to protect our customers from card fraud.

Recycled packaging may be used to keep our shipping costs down, resulting in better prices for our customers.

Backordered Items

We do our best to keep items in stock, but occasionally items may be backordered. If this occurs we will notify you as soon as possible. We will ship the items as soon as they are received.

Order Returns

Granger Amplification Custom Shop strives to satisfy the customer and offer the highest levels of quality and service. If for any reason you are dissatisfied with our products (excluding our hand-built amplifiers, cabinets, amp kits, or any other special order that includes non-regularly stocked items, which are non-refundable), simply follow the directions below to return the order within 15 days of purchase date and we will promptly process your request and refund your payment, minus any non-refundable vendor or merchant processing fees and shipping charges. Please ensure the product is in all its original packaging and has not been used. Items that show signs of use or neglect may only qualify for partial refund or credit, or none at all, based on our discretion. Mod kits that are partially assembled or missing parts, and tubes that show markings of use (scratches, burned paint, broken guide pins, etc.) will not be credited. Small orders are subject to a 5% restocking & processing fee. Large, orders of 8 items or more, and heavy items (transformers, speakers, etc.) will incur a 15% restocking & processing fee. All amplifier, cabinet, amp kit, and special order item sales are final. If your order arrived with shipping damage, contact us immediately so that we can file a damage claim with the shipper and arrange a return to assess the damage and repair your amp.

A Return Authorization Number is required! Please contact us by e-mail or by Telephone (205-436-8219) between the hours of 9:30am-5:30pm CST to receive an RA before returning any items. If calling after hours or in the event of no answer you may leave a message requesting an RA and we will email or call back.

Once you have received an RA, return items to:

Granger Amplification LLC
132 Pinecrest Rd
Hueytown, AL 35023

Customers are responsible for all return shipping charges, and assume all risk of loss/damage - please insure your shipment properly. Upon receipt we will ensure that your credit card or PayPal account is credited within 7 business days for any returned items that meet the terms listed above, minus any vendor fees. Granger Amplification LLC reserves the right to update and make changes to this document without notification.

Granger Amplification LLC reserves the right to update our policies and this document as needed, without notice.

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All content copyright 2008-2017 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, custom amp builds, Epiphone Valve Junior and other mods. 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, vari-wattage, amplifier, handwired, point to point, tube, vacuum tube, valve amp, kit build, amp kits, made in usa, e35, mv36, m50, m45, cg50, g50, h50, dragonfly, marshall, fender, jtm45, jmp, jmp50, jmp100, jcm, jcm800, superlead, plexi, 15 watt, 18 watt, 35 watt, 36 watt, 40 watt, 45 watt, 50 watt, 100 watt, matchless, trainwreck, ods, epiphone valve junior, blackheart, tweed, deluxe, curt granger, birmingham alabama