Tweed Champ® 5F1 Style Guitar Tube Amp Kit


Cabinet and Speaker Sold Separately (Add Below)
Weight: 9.8 lb
Sale Unit: Piece

In Stock


Amp Kit Difficulty Level


If this kit shows as out of stock please 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.


Mojotone’s Tweed Champ Style Amp Kit is based on the beloved 5 watt amp from the 1950s. These amps were perfect for recording and were featured on a wide array of recordings from Joe Walsh’s “Rocky Mountain Way” all the way to Derek & the Dominos’ “Layla.” Modeled after the historic Class-A 6V6 platform, this amp delivers warm tones that are harmonically rich and have a beautiful low volume crunch.

  • Class Type:A All Tube Amplifier
  • Output:~5 Watts
  • Circuit:5F1
  • Bias Type:Cathode Biased
  • Build Time:~4 hours
  • Preamp Tubes: ECC83/12AX7 (1)
  • Output Tube(s): 6V6GT (1)
  • Rectifier Tube: 5Y3
  • Transformers:Power - Champ Power (MOJO760EX), Output - Champ (NOS771)
  • Hardware:Tweed Champ Small Parts Kit, Tweed Champ Chassis, 10' Install 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:
Tweed Champ Schematic
Tweed Champ Wiring Diagram

Click HERE to view an image of this chassis completed in accordance with the schematic provided above.

Ratings & Reviews

6 reviews

  • 3 stars
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  • 1 star
  • 0 reviews
5/18/2023 1:39 pm

It’s a Great Kit + Some Advice

by David -

This is an excellent kit with high quality parts. I’m writing this review with a few pieces of advice. If you’ve never built an amp, please read. I’m not an expert, but I hope this helps.

1. Consider the 5f2. Mojotone sells it as well. It’s similar to the 5f1 but with tone control. You can always mod the 5f1 to have a tone control, so it’s up to you. (5f1 is a classic though. I don’t want to give the impression that this isn’t a beautiful sounding circuit.)

2. If you’ve never built an amp, built a pedal or two first. Mistakes are generally cheaper on pedals, and they’re generally safer to work on.

3. Consider buying a capacitor discharge pen. They’re like $20 and are a nice safety tool.

4. Learn how to drain the capacitors. (They can hold a charge even if the amp is unplugged.)

5. Read ahead before you solder.

6. Learn the basic functions of a multimeter.

7. Wear safety glasses.

8. If it’s plugged in, part of the circuit is hot, even if the amp is switched off.

11/26/2022 8:07 pm

Everyone should own a 5F1 once in their life.

by jacktoz -

I built this amp about 12 years ago and figured it was time for a review. The cabinet was built to accommodate a 15” speaker. My first speaker was a Weber 15A100. The 15” had a big upper mid-range edge and a beam blocker did not help. Mojotone makes a great 15” to 12” speaker adapter. That adapter and a WGS G12Q was a big step in the right direction. It had gorgeous mids, but it was a little too dark on top with the 5F1 circuit. Then I tried a Weber 12A125S. Although less efficient, the top opened up like crazy and there was touch sensitivity that was better than any amp I've owned. Dimed with an Esquire, Page's early sound comes right into the studio. Played clean with a Heritage H150 or a Strat, it is everything a great clean sound should be.

Like a 5E3, everyone should own a 5F1 at least once in their life.