---
product_id: 151663618
title: "Nobsound 3-IN-1-OUT XLR Audio Switch ; Balanced Audio Converter ; 3-Way Stereo Passive Audio Selector Switcher (MC103 Pro 3-in)"
brand: "nobsound"
price: "€ 157.27"
currency: EUR
in_stock: true
reviews_count: 13
category: "Nobsound"
url: https://www.desertcart.es/products/151663618-nobsound-3-in-1-out-xlr-audio-switch-balanced-audio
store_origin: ES
region: Spain
---

# Passive design ensures zero signal loss or noise 3 stereo XLR inputs for versatile source switching All-aluminum shell blocks external interference Nobsound 3-IN-1-OUT XLR Audio Switch ; Balanced Audio Converter ; 3-Way Stereo Passive Audio Selector Switcher (MC103 Pro 3-in)

**Brand:** nobsound
**Price:** € 157.27
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your audio game—switch like a pro, hear like a connoisseur.

## Quick Answers

- **What is this?** Nobsound 3-IN-1-OUT XLR Audio Switch ; Balanced Audio Converter ; 3-Way Stereo Passive Audio Selector Switcher (MC103 Pro 3-in) by nobsound
- **How much does it cost?** € 157.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/151663618-nobsound-3-in-1-out-xlr-audio-switch-balanced-audio)

## Best For

- nobsound enthusiasts

## Why This Product

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

## Key Features

- • **Premium Connectivity:** Gold-plated XLR ports ensure reliable, corrosion-resistant connections minimizing signal attenuation.
- • **Robust Noise Shielding:** Durable aluminum chassis and shielding wires eliminate external interference for crystal-clear audio.
- • **Compact & Portable Design:** Sleek, mini form factor fits effortlessly into any pro setup or on-the-go rig for instant audio comparisons.
- • **Seamless Source Switching:** Effortlessly toggle between 3 balanced XLR audio inputs without compromising sound integrity.
- • **Audiophile-Grade Signal Purity:** Passive circuitry guarantees zero coloration or degradation—hear your music exactly as intended.

## Overview

The Nobsound MC103 Pro is a compact, 3-in-1-out passive stereo XLR audio switcher designed for professionals and audiophiles. Featuring an all-aluminum noise-shielding shell, gold-plated connectors, and lossless signal transmission, it allows seamless switching between three balanced audio sources without any signal degradation. Perfect for quick A/B testing or managing multiple audio devices with pristine sound quality.

## Description

desertcart.com: Nobsound 3-IN-1-OUT XLR Audio Switch ; Balanced Audio Converter ; 3-Way Stereo Passive Audio Selector Switcher (MC103 Pro 3-in) : Electronics

Review: Basic, but functional - Some images of this product appear on the internet showing "Neutrik" XLR connectors. Note that this product offering does not claim Neutrik connectors. The unit I received sported only generic XLR's. If Neutriks had been utilized, the end product price would be a lot more than currently offered. Having clarified that, the components and assembly of this XLR switch are basic, but it will work fine in audiophile or even professional environments for casual, light duty applications. I used it for an A-B test of a new DAC vs. my previously utilized DAC. I felt there was some audio improvement with the new DAC but wanted to verify that in a matched-level A-B test. The switch box permits auditioning each sound with minimal delay for switching. Since the rotary switch on this box was reported to be the make-before-break type, I used only the "X" and "Z" inputs, so that the two DACs were always completely isolated from each other. Many other reviews, including a technical measurement review on a gear-oriented website, confirm that this box does not alter or detract from the sound. That also was my experience. Having completed my A-B test, this box will be handy to keep around for occasional future need.
Review: Does the job transparently - Excellent Product. I'm using it to run my audio production setup and my hifi/listening setup out to one pair of active monitors. I notice no noise or signal degradation at all in my particular case. My one and only gripe is the weight of the product; it's very light, and if you're using very heavy XLR cables it will tilt backwards slightly, though I'm not deducting any stars for that as it doesn't effect functionality.

## Features

- MC103-Pro is a 3-way passive stereo audio splitter. It supports 3 stereo XLR inputs and 1 output. You can choose freely according to your audio device.
- MC103 is designed for customers have several music equipment with XLR balanced output. You can conveniently switch among different sound sources and compare their sound performance.
- All aluminum shell to effectively avoid external noise and guarantee high-quality signal transmission; Gold-plated XLR ports to ensure high reliability electric connection and minimize signal attenuation during its transmission.
- Each channel has been connected with shielding wire to avoid interference from outside and make sure lossless signal transmission. Exquisite appearance with mini size; can be easily placed and carried to enjoy the charming of music everywhere.
- Passive audio switcher, no impact on the sound quality; Silver-plated contacts make the knob very smooth

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07QVKPR2V |
| Best Sellers Rank | #134 in Audio & Video Selector Boxes |
| Customer Reviews | 4.7 4.7 out of 5 stars (272) |
| Date First Available | April 22, 2019 |
| Item Weight | 1.46 pounds |
| Item model number | GFJ721 |
| Manufacturer | Nobsound |
| Product Dimensions | 5.83 x 4.13 x 2.72 inches |

## Product Details

- **Brand:** Nobsound
- **Cable Type:** XLR
- **Color:** Black
- **Compatible Devices:** Amplifier, Audio Mixer, Speaker, Television, XLR MIC
- **Connector Type:** XLR

## Images

![Nobsound 3-IN-1-OUT XLR Audio Switch ; Balanced Audio Converter ; 3-Way Stereo Passive Audio Selector Switcher (MC103 Pro 3-in) - Image 1](https://m.media-amazon.com/images/I/71A1QxAFApL.jpg)

## Questions & Answers

**Q: In xlr input - rca output setup, does it invert and sum up negative with positive signal(removing noise), and then only pass to rca?**
A: Using XLR at both ends gives a better sound, if using XLR at one end and the other end is RCA, the sound output will slightly lower down and need to increase the volume and there will be no sound distortion.

**Q: When output "A" is selected, are outputs "B" and "C" left floating or are they grounded, etc?**
A: Well this is a 3 IN 1 OUT switch. So only one out. As for the other inputs being grounded when not selected, I can’t answer that, but there is no noise from other inputs.

**Q: Does anyone know of a similar switch that supports an infrared remote control to select the input, as opposed to only the physical selector dial ?**
A: No. Have not scene one.

**Q: Balanced inputs without balanced internals?
one customer review claims as much, which defeats the purpose of using xlr cables. is this true?**
A: Hello. It is balanced in and out. This device won't change any characteristics. It is only a passive converter.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Basic, but functional
*by C***C on September 28, 2023*

Some images of this product appear on the internet showing "Neutrik" XLR connectors. Note that this product offering does not claim Neutrik connectors. The unit I received sported only generic XLR's. If Neutriks had been utilized, the end product price would be a lot more than currently offered. Having clarified that, the components and assembly of this XLR switch are basic, but it will work fine in audiophile or even professional environments for casual, light duty applications. I used it for an A-B test of a new DAC vs. my previously utilized DAC. I felt there was some audio improvement with the new DAC but wanted to verify that in a matched-level A-B test. The switch box permits auditioning each sound with minimal delay for switching. Since the rotary switch on this box was reported to be the make-before-break type, I used only the "X" and "Z" inputs, so that the two DACs were always completely isolated from each other. Many other reviews, including a technical measurement review on a gear-oriented website, confirm that this box does not alter or detract from the sound. That also was my experience. Having completed my A-B test, this box will be handy to keep around for occasional future need.

### ⭐⭐⭐⭐⭐ Does the job transparently
*by E***S on August 29, 2025*

Excellent Product. I'm using it to run my audio production setup and my hifi/listening setup out to one pair of active monitors. I notice no noise or signal degradation at all in my particular case. My one and only gripe is the weight of the product; it's very light, and if you're using very heavy XLR cables it will tilt backwards slightly, though I'm not deducting any stars for that as it doesn't effect functionality.

### ⭐⭐⭐⭐⭐ convieniant for home studios!
*by C***K on July 23, 2022*

I use this as a switch for 3 sets of XLR input pairs - 1 pair in an isolation booth, one on the DIs for my guitar rig, and one for some desk mounted mics for quick and dirty recordings, or pod casting. This is an awesome tool for switching. no noise, very little signal loss (depending on your cable lengths of course), 100% passive, so nothing to plug in other than your XLRs, and it just works! 5 stars

## Frequently Bought Together

- Nobsound 3-IN-1-OUT XLR Audio Switch ; Balanced Audio Converter ; 3-Way Stereo Passive Audio Selector Switcher (MC103 Pro 3-in)
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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-03-11*