---
product_id: 15378224
title: "3Leaf Audio Proton Envelope Filter Pedal"
brand: "3leaf audio"
price: "¥605"
currency: JPY
in_stock: false
reviews_count: 1
url: https://www.desertcart.jp/products/15378224-3leaf-audio-proton-envelope-filter-pedal
store_origin: JP
region: Japan
---

# 3Leaf Audio Proton Envelope Filter Pedal

**Brand:** 3leaf audio
**Price:** ¥605
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** 3Leaf Audio Proton Envelope Filter Pedal by 3leaf audio
- **How much does it cost?** ¥605 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/15378224-3leaf-audio-proton-envelope-filter-pedal)

## Best For

- 3leaf audio enthusiasts

## Why This Product

- Trusted 3leaf audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

The Mutron III envelope filter was a staple of 1970?s funk and soul music that shaped the sounds of Bootsy Collins, Stevie Wonder and Jerry Garcia among others. But as good as the Mutron sounded, it was not without its problems. It was huge and required a special power supply, and it had a sensitivity control that changed your volume when you kicked it on. Then there's the price - originals routinely fetch $500 or more on eBay! The new Proton envelope filter contains the essence of what made the old Mutron sound so good, without all of the drawbacks of the original. It's small, it runs on a standard 9-18v DC power supply (no battery), and it won't change your volume when you kick it on. But most importantly, it sounds FUNKY. With its simple control layout, you can easily dial in the slurpy, wet filter sounds of the original. Set the sensitivity with the GAIN control and the resonance with the PEAK control, and you're good to go! It also features high and low range positions, lowpass and bandpass modes, and a sweep reverse. It has a wide sensitivity range that will drive active or passive instruments, and the filter range is such that it will sound great on guitar, bass, and whatever else you can throw at it. Note: the Proton does not come with a power supply. It is compatible with any standard 9-18v center-negative supply ("Boss-style").

## Features

- No volume drop
- Simple control layout
- Lowpass and bandpass modes
- 9 Volt operation
- Rugged construction

## Images

![3Leaf Audio Proton Envelope Filter Pedal - Image 1](https://m.media-amazon.com/images/W/WEBP_402378-T1/images/I/51U3jl4WQ9L.jpg)
![3Leaf Audio Proton Envelope Filter Pedal - Image 2](https://m.media-amazon.com/images/W/WEBP_402378-T1/images/I/51bj1q8ArbL.jpg)
![3Leaf Audio Proton Envelope Filter Pedal - Image 3](https://m.media-amazon.com/images/W/WEBP_402378-T1/images/I/51VE0-3zdzL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Great Mutron clone
  

*by A***R on Reviewed in the United States on November 28, 2013*

Nails the WHOMP Jerry Garcia tone. Small, sturdy, quiet. Takes either 9 or 18 volt power supply. I love it.

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**Shop now:** [https://www.desertcart.jp/products/15378224-3leaf-audio-proton-envelope-filter-pedal](https://www.desertcart.jp/products/15378224-3leaf-audio-proton-envelope-filter-pedal)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-18*