Amp Kit - Mod® Electronics, MOD102 guitar amplifier

Mod Electronics
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Customer image:<br/>"Narongchai in Thailand"
Customer image:<br/>"Narongchai in Thailand"
Customer image:<br/>""
Customer image:<br/>"Mod 102 with custom topper"
Customer image:<br/>"Refinished an old tube radio cabinet for the mod 102s enclosure. "
Customer image:<br/>""
Customer image:<br/>"Ended up as a Gibson Skylark. Love the Hammond transformers."
Customer image:<br/>"The Tape Farm Fiver.. Replaced the ECC83 with and ECC81 to give it more headroom."
Customer image:<br/>"2017 Mod102 build mounted in a modified G-DEC Junior cabinet."
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Customer Images:
Customer image: "Narongchai in Thailand"Customer image: "Narongchai in Thailand"Customer image: ""Customer image: "Mod 102 with custom topper"Customer image: "Refinished an old tube radio cabinet for the mod 102s enclosure. "Customer image: ""Customer image: "Ended up as a Gibson Skylark. Love the Hammond transformers."Customer image: "The Tape Farm Fiver.. Replaced the ECC83 with and ECC81 to give it more headroom."Customer image: "2017 Mod102 build mounted in a modified G-DEC Junior cabinet."

Amp Kit - Mod® Electronics, MOD102 guitar amplifier

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The Mod® Electronics MOD 102 is a great place to start for those interested in building their own tube amp. It is based on a classic American tube-circuit design combined with a British-style Class A output tube section. At low volume it produces a clean, chimey tone that moves into smooth overdrive at higher volumes. All parts are included along with a pre-drilled steel chassis, wire, and tubes (1 EL84 and 1 12AX7). Puts out at least 5 watts. The chassis layout is open for easy assembly using the clear, easy to follow instructions. You will need your own tools and solder.

MOD 102 Guitar Amp Kit Features:

  • All Tube Design (solid-state diodes used only for full-wave rectification)
  • 5W output power into 8 Ohm
  • 1 channel
  • Vintage channel controls: bass, treble and volume
  • Vintage pilot lamp and screw-on jewel cover for power-on indication
  • Output Impedance: 8 Ohm
  • Tubes included: one 12AX7 (preamp), one EL84 (JJ Electronic brand)
  • Hammond Mfg 269EX power transformer and P-T31 single-ended output transformer
  • Cathode biased class A power tube operation (no bias adjustment needed)
  • Point to point hand wiring using terminal strips
  • Carbon film resistors
  • Metalized polyester coupling caps
  • Pre-punched steel chassis
  • Assembled Kit Weight: 4.25 lbs.
  • Assembled Kit Dimensions: 10" Width x 6" Depth x 5-⅛" Height

MOD 102 Instructional Features:

  • Detailed, easy-to-follow instructions include high resolution computer drawings for parts list and every step of assembly
  • Tips for soldering and wiring
  • On-line technical support
Build Difficulty
Item ID:
Mod ElectronicsAnimus Series
Product Measurements by Type
Height5.125 in.
Item Height8.5 in.
Item Length12 in.
Item Width10.5 in.
Length10 in.
Output Impedance (Zout)8 Ω
Output Power (POut)5 W
Width6 in.
Packaging Information
Packaging Dimensions13 in. × 11 in. × 9 in.
Weight (Packaging)6.4 lbs.

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Specifications, Files, and Documents

Sound Samples:

PDF: 102 to 102+ Conversion 102 to 102+ Conversion530.83 KB
PDF: Assembly Drawings Assembly Drawings217.46 KB
PDF: Instructions Instructions1.42 MB
PDF: Parts List Parts List300.25 KB
PDF: Power Standby Switch Mod Power Standby Switch Mod369.18 KB
PDF: Schematic Schematic193.67 KB
PDF: Troubleshooting Supplement Troubleshooting Supplement457.14 KB
PDF: World Power Transformer Mod World Power Transformer Mod9.23 KB

Questions and Answers

Click each question to see its answers.
Asked by Anonymous on October 24th, 2017.
Matt H
October 24th, 2017
The whole point of the kit is to build it yourself to learn and expand knowledge of electronics and amp building. A printed circuit board would essentially eliminate that process. It's called point to point hand wiring.
October 5th, 2020
I don’t know if you’ve ever played a hand wired amp but once you do your question will be answered. The response from quality handwired components is so much better...
Asked by Anonymous on January 8th, 2016.
January 12th, 2016
Staff Member
Top Contributor
I was able to check this amp out with bass and it did well at bedroom levels.It did clean tones and had a nice breakup when you crank it. I wouldn't say that it could be used for bass at gigging levels but it did a good job for bass.
Asked by Anonymous on August 18th, 2016.
Matt H
August 18th, 2016
We recommend P-T125J. This kit was designed around 5k so there is a slight difference since the P-T125J is 4k.
Asked by Anonymous on September 28th, 2016.
Matt H
September 28th, 2016
For technical questions please send your email to [email protected]
Asked by Anonymous on December 29th, 2017.
Matt H
December 29th, 2017
You would have to replace the stock transformer P-T31 with the P-T125CSE.
Asked by Anonymous on February 7th, 2020.
February 11th, 2020
Staff Member
You are free to use any 12AX7 (or 12AX7 variant) in the preamp and any EL84 (6BQ5) in the power section. New old stock tubes are certainly included in that list.
Asked by Anonymous on April 11th, 2020.
April 13th, 2020
Staff Member
Yes, you can use the following link for guidance on converting your 102 to a 102+.
Asked by Anonymous on June 2nd, 2020.
June 2nd, 2020
Staff Member
There is no guide or parts provided for this but adding an effect loop is possible.
Asked by Anonymous on September 30th, 2020.
September 30th, 2020
Staff Member
You can add the mid boost switch or any of the additional features of the 102+ to the standard version. See this file for more information.
Asked by Anonymous on January 19th, 2021.
January 19th, 2021
Staff Member
We only recommend building the kit in its standard EL84 / 12AX7 configuration. The output transformer has a 5K ohm primary and the plate voltage on the power tube is ~258V.
Asked by rfraga56 on March 13th, 2021.
March 16th, 2021
Staff Member
You can add those or any of the changes from the Mod 102+ to a standard 102 build.
Asked by Anonymous on March 15th, 2022.
March 15th, 2022
Staff Member
If Australia doesn't use a 120V setup, you can simply use the "world power conversion" document to allow this kit to be used internationally.

Product Reviews

5.00 out of 5 based on 13 reviews
Plissken81 - August 25th, 2022
5 out of 5

This is the first amp I have ever built and it was great. I have several years experience building pedals, this was a fun next step. The tone is great, very warm and dynamic. I would recommend this kit to anyone.

tommy6 - May 12th, 2022
5 out of 5

Great kit, fun to build. Took just a few hours from start to completion. Instructions are very high quality. I completed the build and then powered up without tubes to do voltage checks. When everything looked good I added the tubes and powered back up. Plugged in a Telecaster and started playing. Highly recommended if you are comfortable with building a project of this type.

Mike W - September 17th, 2020
5 out of 5

This will be my third amp build, always quality parts and sounds great. Signal breaks up nicely when turned up. Used the Jensen Vintage Ceramic speaker in 2 of them, nice warm tone that compliments the circuit.

Russell - November 12th, 2019
5 out of 5

Great little amplifier! Sounds excellent and was fun to build. MODkits was also very helpful when I inevitably needed help troubleshooting a mistake I made. Would recommend this for anybody looking to build their first amp but I would strongly recommend you build a pedal first and practice your soldering skills. I have build several pedals and this was still a challenge.

Brandon - October 17th, 2019
5 out of 5

I spent three evenings building the MOD102. The instructions are very easy to understand and the amp has a great Fender sound. I had one grounding issue that was easily fixed with a little help from tech support, which was excellent. If you're good at following step by step instructions and can solder well this is a fun little amp to build. Only small issue is the labels. They could stand an improvement.

danjbeckett - April 18th, 2019
5 out of 5

I just finished this amp build and it sounds fantastic! I also just finished a Marshall 18 Watt clone and I have to say that the Mod102+ holds its own very nicely alongside the Marshall. In fact, I will probably use the Mod102+ for recording because it sounds amazing at lower volumes (the Marshall is loud AF). Honestly, if I were only going to build one of them today, it would be the Mod. I'm blown away by the tone! Great kit with excellent instructions. Great bang for the buck. The parts all seem to be top quality. I love the old style cloth solid core wire, too. I find it much easier to work with than modern stranded wire. The labels are a bit lame but I covered them with packing tape as suggested before cutting them out and they look fine. If you're thinking about building an amp, build this one.

DougWheeler - August 6th, 2018
5 out of 5

First the down side: I found the labels to be subpar. Printing was flawed with black areas having many non-printed areas leaving a spotted background. When I attempted to cut the labels out with my X- ACTO knife they shredded. I ended up using a label maker.

Now the up side: This was a fun kit to build. I followed the suggestion of a previous reviewer and made sure that all paint was removed where terminal strips mounted to the chassis. I then verified solid ground connections were made using an ohm meter. The component layout diagrams are very helpful for component placement. However, I found it useful to change the sequence of some steps. For instance, where wire or components are soldered to the lower hole on a terminal strip I found it easier to do that before soldering components on upper parts of the strip. I also assembled and soldered the T2/T3 assembly externally by screwing them to a wooden block, soldering all components and then installing it as a unit into the chassis.

The schematic with voltages given for key points was very helpful when I inadvertently skipped a step and the amp did not work. Standard troubleshooting techniques using the schematic found the problem.

Customer support: There was a mix up in parts, partially my error and partially Amplified Parts error. Customer support by Wesley Fleck was superb and reason enough to buy from them. The issue was quickly resolved. Thank you again Wesley!

I will be buying another kit in the future from Amplified Parts. - April 27th, 2014
5 out of 5

I got this kit one year ago and built it in about two weeks of evenings. I had a little solid state combo amp with a ten inch speaker that had died on me. So I removed the solid state chassis and fitted the Mod 102 chassis inside the cabinet. With a few slight modifications to the cabinet, and turning over the graphics on the Mod 102 panel, it looks almost like it could have come from the factory that way. The best part is the sound and performance. It sounds much better, much more organic than the SS amp ever did, esp[ecially when pushed a little. Generally I run it with the knobs all on about 6, and there is a nice, soft edge to the distortion. I turn the guitar volume down or play lightly for clean tones and turn it up or dig in for distortion.

It's not only a great little practice amp, but I mic it and play it as a worship leader at my church. - December 12th, 2013
5 out of 5

finished the amp. had tons of help from tech support. They were always quick to answer questions and offer advice. All of the problems I had were my own doing, but they made it right. really pleased

angry penguin - May 27th, 2013
5 out of 5

Love the sound of this little amp. I took my time. Painted it yellow. Changed out the Chinese tube for a Tungsol. Running it through a 1X12 cab with a Jensen. Classic sound. Overdrives nice a higher volumes.