British Style 18W Guitar Tube Amp Kit

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Cabinet and Speaker Sold Separately (Add Below)
SKU: G118H222
Weight: 21.24 lb
Sale Unit: Piece

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Please read our article 'Mojotone Amp Kit Building Primer' along with our amp kit disclaimer located in the Specs tab before buying this kit.


"The tones are faithful to original ’60s sound. You get strong power amp distortion at relatively low levels, creating the impression of a larger, louder amp. The highs sizzle with excitement, but never get nasty...The clean tones are wonderful too. They’re far from Fender-like, but they have an airy shimmer you don’t always associate with big British amps. The single-band tone control is a delight, with usable sounds throughout its range. This amp sounds good no matter how you set the controls."

-Joe Gore
Premier Guitar Magazine

Read the entire Premier Guitar Magazine article


If you are looking for an amplifier that is compact, lightweight, but powerful, this is the jewel for you. It produces beautiful cleans and one of the best distortion tones ever produced. The 18 watt amplifier is the epitome of perfect vintage Marshall® tone.

  • Class Type:A All Tube Amplifier
  • Output:~18 Watts
  • Circuit:1966-68 1974 18 Watt Class A/B All Tube Amplifier
  • Bias Type:Cathode Bias
  • Build Time:~6 hours
  • Preamp Tubes: ECC83/12AX7 (3)
  • Output Tube(s): EL84 (2)
  • Rectifier Tube: EZ81
  • Transformers:Power - 18W (7000018), Output - 18W (7000118)
  • Hardware:British 18W Small Parts Kit, British 18W Chassis, Front & Rear Faceplates, British 2-button Footswitch, 10' Removable Power Cord

Disclaimer: Some of the parts contained in this kit are subject to availability.

Mojotone reserves the right to change or substitute any and all of the parts contained in this amplifier kit without advertisement or notification to the buyer. Part substitutions made by Mojotone are guaranteed not to affect the integrity or operation of your amplifier kit. Time estimates listed are from start to finish. If you are new to tube amplifiers, additional time may need to be factored.


When purchasing a kit from Mojotone, you will receive the following documentation.

1. Schematic

2. Wiring Diagram / Layout

Our beginner level kits such as the tweed champ and tweed deluxe include a manual. If you purchase a kit from Mojotone and do not receive these documents, you can obtain copies by emailing or calling 800-927-6656. The Mojotone staff is available Monday through Friday from 8:30 a.m. to 5:00 p.m. EST unless otherwise closed.


Mojotone kits include the best quality parts that are available at the time of purchase. If a substitution is required, our team will use parts that are of equal quality to ensure the integrity of the kit build remains the same.


Building a fully functional amplifier kit is not an easy task. Before building a kit, one should have the ability to properly solder as well as read and understand a schematic and wiring diagram. While we do our very best to ensure all documentation is current, the included documentation is meant to serve as an overall guide to building the amplifier. Simply following the schematic and wiring diagram does not guarantee you will have a fully functional amplifier. In fact, post build troubleshooting is a common issue across all builds.


Our staff is available to assist with basic troubleshooting needs. There are plenty of online videos available that are helpful with most post build issues. Technical staff is available via email by sending a message to You may also call our sales team to discuss build problems, dial 800-927-6656 and press 1 for sales.


Building a tube amplifier takes time, dedication, resources and most importantly... Skills! The experience of building an amp can come with some frustration, the reward of completing the build is definitely well worth your time. Please review the wiring diagram, schematic and manual (if applicable) prior to making your purchase. Mojotone will not accept any returns on amplifier kits and/or parts that have been assembled, soldered or modified.

This amp kit also comes with the following documents. Please feel free to view and/or download them:

British 18W Schematic

British 18W Wiring Diagram

Videos Featuring This Product

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