British Style 45W 2x12 Combo Amp Kit
This kit has a lead time. Check here for more information.
Please read our article 'Mojotone Amp Kit Building Primer' along with our amp kit disclaimer located in the Specs tab before buying this kit.
This was the first amplifier Marshall® ever built, based off of the 5F6A circuit. Favored by blues and rock guitarists, this amp can produce a warm sustain and elegant clean tones, with a pronounced rectifier "sag." Played by guitar greats such as Angus Young and Gary Moore.
- Class Type:AB All Tube Amplifier
- Output:~45 Watts
- Bias Type:Fixed Bias with an adjustable potentiometer
- Build Time:~6 hours
- Preamp Tubes:JJ ECC83/12AX7 (3)
- Output Tube(s):JJ E34L (2)
- Rectifier Tube:JJ 5AR4 / GZ34
- Transformers:Power - 45 (7020300), Output - 45 (7021300), Choke - (MOJO777)
- Speakers:Mojotone BV-30V Speakers (2)
- Cabinet:British Bluesbreaker 2x12 Combo Cabinet
- Hardware:British 45 Small Parts Kit, British 45 Chassis, Front & Rear Faceplates, 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.
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 firstname.lastname@example.org 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 email@example.com. 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:
Ratings & Reviews
British 45 is up and sounding great. Iâ€™m fortunate to have access to an original 1968 super lead and the British 45 sounds very similar, well done Mojo and thanks for all your support and quick response on replacement parts. If you take your time and double check each step you will have an amazing old school amp.
These kits are superb. All components from the chassis to the resistors are highest quality components. The cabinets are amazing.
This kit **does** deserve 5 stars although it did make a few minor changes not on an original JTM45: 1) both 32uF can caps 2) one 16uF moved off-board 3) the PT and OT are really close together 4) the wire is tweed wire 5) doesn't come with solder lugs as originals did 6) resistors are carbon comps whereas most were carbon film
I got a correct wiring kit with all the correct colors and substituted a Mercury Magnetics RadioSpares OT and put a 16x2 can cap with doubled wire and solder lugs. No problem. Build mine with original Piher resistors and Mullard mustards.
Very very happy with this amp.
As always, everything within the kit was well-labeled and easy to identify. The woodwork quality: fantastic. It took less time than I originally thought to assemble this piece, which was good since I was genuinely excited to hear the results!