---
product_id: 434495268
title: "EX Signal Line Select A/B Box Switch Mini Guitar Effect Pedal Channel True Bypass"
brand: "ex"
price: "€ 51.20"
currency: EUR
in_stock: true
reviews_count: 8
category: "Ex"
url: https://www.desertcart.fr/products/434495268-ex-signal-line-select-a-b-box-switch-mini-guitar
store_origin: FR
region: France
---

# True bypass for pure tone LED channel indicators with 9V power Passive A/B switching, no power needed EX Signal Line Select A/B Box Switch Mini Guitar Effect Pedal Channel True Bypass

**Brand:** ex
**Price:** € 51.20
**Availability:** ✅ In Stock

## Summary

> 🎛️ Elevate your rig with flawless tone switching — never miss a beat!

## Quick Answers

- **What is this?** EX Signal Line Select A/B Box Switch Mini Guitar Effect Pedal Channel True Bypass by ex
- **How much does it cost?** € 51.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/434495268-ex-signal-line-select-a-b-box-switch-mini-guitar)

## Best For

- ex enthusiasts

## Why This Product

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

## Key Features

- • **Power-Free Operation:** Passive design lets you switch silently on stage without batteries or power adapters.
- • **Studio-Grade Clarity:** True bypass and noise-canceling circuitry preserve your guitar’s natural sound with zero signal degradation.
- • **Tour-Ready Durability:** Rugged aluminum chassis and compact size fit perfectly on any pedalboard or gig bag.
- • **Seamless Signal Routing:** Effortlessly switch between amps, tuners, and instruments without losing tone integrity.
- • **Visual Precision Control:** Optional 9V power activates bright LEDs for instant channel feedback during live performances.

## Overview

The EX Signal Line Select A/B Box Switch Mini is a compact, passive guitar pedal designed for professional musicians who demand pristine tone and reliable signal routing. Featuring true bypass circuitry and noise reduction, it ensures zero signal loss while allowing seamless switching between amps, tuners, or instruments. Its rugged aluminum build and optional LED indicators make it an essential, portable tool for complex pedalboards and live performances.

## Description

Unlock new tonal possibilities with the EX A/B Box, the ultimate signal management solution for discerning musicians. This innovative passive router eliminates complicated amp switching while preserving your instrument's natural tone through its transparent buffer-free design.Crafted for guitarists who demand reliability, our A/B Box shines in critical performance scenarios:Instantly A/B test different amplifier tones mid-songCreate silent tuning circuits by routing to a dedicated tunerCombine multiple instruments through reverse signal flowBuild complex pedalboard setups without signal degradationThe A/B-BOX's intelligent design offers two operational modes:1. Passive Mode (No Power): Enjoy essential switching functions with zero noise or coloration2. Powered Mode (9V Adapter): Activate bright LED channel indicators for precise stage controlWith its military-grade footswitch and shielded copper wiring, this A/B Box delivers click-free transitions whether you're recording in the studio or performing under hot stage lights. The compact footprint fits neatly on pedalboards while providing professional routing capabilities typically found in rack-mounted systems.

Review: Awesome - If you need fine adjustments (audiophile) choose something else. Maximum 3dB up and down on all sliders and they aren't very linear. Think of an exponential graph. The sliders don't do much till they get to about 75% and then have a noticeable change again through to 100%. That being said, it is VERY good. Middle notch makes returning sliders to 0dB easy and exact. It's built solid out of metal. Form factor is ingenious for a 7 band EQ and the price makes it the best value for a equalizer pedal hands down. Even though mine was clearly used I don't care. It's good quality and does what it needs to for me and doesn't take up space.
Review: Takes up some space but works great - Had this on my board for 4 years to switch between distortion channel and clean and it still works great. Unfortunately the room in takes up sitting horizontal, especially the added width caused by cables coming out the left and right side and the bypass button, I button I never use, has me looking into an alternative loopbox that can be hidden away. Something with an input for a smaller single button footswitch that can be attached and brought out into the open. This is a much better design but unfortunately I can tell you after a lot of shopping around the cost of an alternative solution like that comes at a cost, in the box I'm looking at the price is 5x as much. Doesn't really make sense why these such a simple device cost so much, and I can't wrap my head around why more companies aren't making these, but if space isn't a deal breaker or you can fit this on to your board, this is absolutely worth investing in. I've decided I have to invest in something much more expensive to save

## Features

- ♬【AB Signal Switch】Effortlessly route signals between instruments, amps, and tuners using our professional A/B Box. Switch one input to dual outputs for amp comparisons/tuner feeds, or combine multiple instruments through reverse routing to a single mixer/amplifier - perfect for guitarists managing complex pedalboards or multi-amp setups
- ♬【True Bypass & Noise Reduction】Experience studio-grade clarity with our integrated noise-canceling circuitry and true bypass design. This A/B Box maintains your original tone's integrity with zero signal degradation, eliminating pops/buzzing while delivering natural frequency response and dynamic articulation.
- ♬【Flexible Power-Free Operation】The passive circuit design enables core switching functions without power (LED indicators require 9V DC adapter). Enjoy silent stage tuning or emergency backups, with optional 9V power activating bright channel LEDs for precise visual feedback.
- ♬【Lightweight and Portable】Engineered with a tour-ready aluminum chassis, this A/B Box delivers rugged portability in an ultra-compact footprint (4.6"x2.5"), effortlessly fitting cramped pedalboards or slipping into gig bags – your ultimate road companion for basement jams to festival stages.
- ♬【NOTICE】Power Adapter is NOT included. ✔If you have any other issue, please feel free to contact us. We will try our best to help you solve it.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09NHRXV87 |
| Best Sellers Rank | #1,467 in Musical Instruments ( See Top 100 in Musical Instruments ) #1 in Electric Guitar Equalization Effects |
| Brand | EX |
| Brand Name | EX |
| Color | Black |
| Controls Type | Physical Buttons and Knobs |
| Customer Reviews | 4.4 out of 5 stars 1,737 Reviews |
| Hardware Interface | 1/4-inch Audio |
| Included Components | A/B Box Switch Pedal |
| Item Height | 2.4 inches |
| Item Weight | 0.17 Kilograms |
| Manufacturer | EX |
| Power Source | Corded Electric |
| Signal Format | Analog |
| Style | Guitar Pedal |
| Warranty Description | 30 days warranty. |

## Product Details

- **Brand:** EX
- **Color:** Black
- **Controls Type:** Physical Buttons and Knobs
- **Item Weight:** 0.17 Kilograms
- **Style:** Guitar Pedal

## Images

![EX Signal Line Select A/B Box Switch Mini Guitar Effect Pedal Channel True Bypass - Image 1](https://m.media-amazon.com/images/I/51vCiVXD6EL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome
*by S***B on December 31, 2025*

If you need fine adjustments (audiophile) choose something else. Maximum 3dB up and down on all sliders and they aren't very linear. Think of an exponential graph. The sliders don't do much till they get to about 75% and then have a noticeable change again through to 100%. That being said, it is VERY good. Middle notch makes returning sliders to 0dB easy and exact. It's built solid out of metal. Form factor is ingenious for a 7 band EQ and the price makes it the best value for a equalizer pedal hands down. Even though mine was clearly used I don't care. It's good quality and does what it needs to for me and doesn't take up space.

### ⭐⭐⭐⭐⭐ Takes up some space but works great
*by J***N on September 15, 2025*

Had this on my board for 4 years to switch between distortion channel and clean and it still works great. Unfortunately the room in takes up sitting horizontal, especially the added width caused by cables coming out the left and right side and the bypass button, I button I never use, has me looking into an alternative loopbox that can be hidden away. Something with an input for a smaller single button footswitch that can be attached and brought out into the open. This is a much better design but unfortunately I can tell you after a lot of shopping around the cost of an alternative solution like that comes at a cost, in the box I'm looking at the price is 5x as much. Doesn't really make sense why these such a simple device cost so much, and I can't wrap my head around why more companies aren't making these, but if space isn't a deal breaker or you can fit this on to your board, this is absolutely worth investing in. I've decided I have to invest in something much more expensive to save

### ⭐⭐⭐⭐ Kinda Fiddly but Sounds Good
*by M***W on July 2, 2025*

I really liked all three modes on this pedal and was surprised how much control I got out of this cheap pedal. I've seen some negative reviews on YT but I think those people probably didn't have the patience to get the most out of the pedal. I was surprised at just how functional this pedal was. The level, decay and mix pots are tiny and very sensitive so that is important to keep in mind if you don't want to deal with that. Another odd thing about it is that, instead of a selector switch, the mode selection is via a potentiometer and it is the most fiddly part of the pedal, especially when trying to select the "Spring" mode. There are two indicator LEDs, one green and one red. So if you want to select spring mode, you have to turn the pot slowly from one extreme or the other and when you see both LEDs light up together, you're in spring mode. It is best to actually strum a chord or note and let it ring while you turn the knob so you can hear the mode change. For the other two modes, simply turning the pot all the way to one side or the other worked to select the other modes but YMMV due to component variance and the way the circuit works. You can use the above technique and just adjust to the point where it goes from both LEDs lit up to a single LED lit up. Having said all this, I have no regrets about buying this pedal. I especially liked the spring mode because you really aren't getting any closer to the sound of a spring reverb tank from a pedal, at any price. It is a classic sound that you need if you want classic rock (and even a lot of modern stuff) to sound right. The other two modes are fine too. The unit seems pretty sturdy but I'm not sure how it would hold up to gigging. I mainly bought it for practicing and for recording. I got it half off on a flash sale and it was a lot cheaper than buying a vintage amp plugin for my DAW. The bundled power supply is of decent quality and didn't cause any noise issues.

## Frequently Bought Together

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-03-12*