L2A Passive Re-Amplifier Kit


  • Full Kit
  • Step-by-Step Guide
  • Supported
  • Beginner

Get started with DIY and build your own professional reamping box with our most popular kit. The L2A is a rugged, sonically transparent re-amplifier that just happens to be a DIY kit. It's also a simple, fun DIY kit that happens to be an excellent piece of studio gear.

Unrivaled feature set


The L2A is the only passive re-amplifier to feature a Neutrik combo XLR/TRS input jack. No need to grab a TRS-to-XLR adapter.

The L2A’s three-way filter switch makes re-amping any source imaginable a breeze. The low-pass filter (LPF) tames high-frequencies, useful for mellowing out guitars and other bright sources, while the high-pass filter (HPF) is perfect for tidying up the low-end and sub-bass frequencies.

Kit Includes

  • Neutrik COMBO XLR/TRS input jack
  • Transformer custom wound in the USA
  • Filter stage with Bypass, 1Khz LPF, and 160Hz HPF settings
  • Super-durable enclosure made from architectural aluminum
  • Circuit board custom designed for beginners
  • Metal-film 1% tolerance resistors
  • 21-detent stepped potentiometer (volume knob)
  • Every nut, bolt, and wire needed to complete the project

The fun part

Designed specifically for DIY beginners, the L2A presents no risk of electrical shock, consists of only a few parts, and can be built in about 30 minutes. Step-by-step instructions are available at

Estimated build time: 30 minutes

Make something great


The L2A multiplies the sonic possibilities of your recording setup by letting you plug the output from your computer, mixer, or tape machine into your guitar amps and effects pedals. Suddenly, all of your guitar gear becomes another set of tools for adding excitement, depth, and harmonic saturation to your pre-recorded audio.

Input Impedance 10k
Output Impedance 15k
THD+N <0.05% @ 1K Hz
Filter Freqs 160Hz HPF, 1kHz LPF

What the pros are saying

“If you are considering a DIY build but are a little intimidated I highly recommend the [L2A]. You’ll have a blast. Even if you aren’t thrilled about building your own gadget, I’d take a serious look at it. It’s a hell of a tool and the price is right.”
- Brandon Drury, Recording Review

Customer Reviews

Based on 134 reviews

good quality

Derek Townsend
Fun and I wish I heard of this sooner.

I have never soldered anything before and was nervous I’d mess it up. I did mess it up initially which was a cool opportunity for me to learn how to desolder. Works perfectly and now I’m buying used pedals every weekend.

Jack Lamos
An absolute game-changer for my setup

I bought this specifically to re-amp my dry guitar stems, but have ended up passing tons of instruments through my guitar pedals. The sound and versatility of the L2A is fantastic, and also pretty easy to assemble. I was originally having audio issues due to a less-than ideal solder, but I was able to easily open it back up for a quick touch-up.

B. D.
Sounds Good, Easy to Build

Simple enough. It’s very easy to follow the instructions, at a minimum you need to know how to solder, that’s it. And it works like it should, pretty straightforward. If you can build it and are willing to spend the 30minutes to an hour that it takes to build it this is the cheapest reamp box on the market.

Jason W.
Sounds great!

Very easy to assemble with great features like low/high pass filtering and level adjustment. A good place to start if just getting into DIY and recording equipment.

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