--- product_id: 151663618 title: "DoukAudio XLR Audio Switcher 3-In-1-Out: Balanced Passive Selector Stereo Converter for Multi Source Comparison Gold Plated Shielded Aluminum Studio HiFi Audiophile" brand: "nobsound" price: "¥19973" currency: JPY in_stock: true reviews_count: 13 category: "Nobsound" url: https://www.desertcart.jp/products/151663618-doukaudio-xlr-audio-switcher-3-in-1-out-balanced-passive store_origin: JP region: Japan --- # Gold-plated XLR ports minimize signal loss 3 stereo XLR inputs, 1 output All-aluminum shell for noise shielding DoukAudio XLR Audio Switcher 3-In-1-Out: Balanced Passive Selector Stereo Converter for Multi Source Comparison Gold Plated Shielded Aluminum Studio HiFi Audiophile **Brand:** nobsound **Price:** ¥19973 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your audio game—switch like a pro, hear the difference! ## Quick Answers - **What is this?** DoukAudio XLR Audio Switcher 3-In-1-Out: Balanced Passive Selector Stereo Converter for Multi Source Comparison Gold Plated Shielded Aluminum Studio HiFi Audiophile by nobsound - **How much does it cost?** ¥19973 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/151663618-doukaudio-xlr-audio-switcher-3-in-1-out-balanced-passive) ## 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 Noise Isolation:** Robust aluminum casing and shielding wires block interference for pristine sound clarity. - • **Compact & Portable Design:** Sleek mini form factor fits perfectly in any professional setup or on-the-go rig. - • **Seamless Source Switching:** Effortlessly toggle between 3 balanced XLR audio inputs with zero signal degradation. - • **Passive, Transparent Audio:** No power needed, no coloration—just pure, unaltered audio performance. - • **Durable, High-Fidelity Connectors:** Gold-plated XLR ports ensure reliable, lossless connections every time. ## Overview The Nobsound MC103 Pro is a compact, passive 3-in-1-out XLR audio switcher designed for audiophiles and professionals with multiple balanced audio sources. Featuring an all-aluminum noise-shielding shell, gold-plated connectors, and shielding wiring, it guarantees lossless, interference-free signal transmission. Its intuitive switching knob and portable design make it an essential tool for seamless source comparison without compromising sound quality. ## Description Product description Gold-plated XLR ports 3 stereo XLR inputs and 1 output Fully passive circuit; Shield wire to avoid interference Conveniently switch among different sound sources Parameters Review: Device works perfectly. But it's not 'new' - This is the perfect device for what was needed. It has been tested, and all three sets of inputs and the one set of outputs work as intended. Good design, good implementation. Sound coming out is completely transparent, as it should be. The form factor is just right, even if the cables do pull the device backward. The alternative of putting inputs and outputs on multiple sides has its own set of drawbacks, and I prefer this configuration. I have read detailed analyses that confirm what my ears tell me. No signal coloration and indiscernible crosstalk. The latter issue (crosstalk) has not been tested extensively in current setup, but I don't hear a thing. Downside: desertcart. It was clear to me as soon as I opened the device that it had been ... opened previously. Pretty sure this was a used device. There is a big desertcart sticker on the outside of the box and the item had been removed from its bag, inside. In addition, the box had an 'impact' indentation on one corner. Does any of this affect usage? Not that I can see. Time will tell. But what is clearly not right is charging full price when an item has been previously used. I'd love for desertcart to chime in and prove me wrong here. But all evidence points to being sold a used item, at new price. And that does not leave me a happy desertcart customer. Things are going the wrong direction, and long time customers notice. Review: Used in home for higher end audio equipment. Used in recording studio for critical A/B testing. - Used for swapping between AV reveiver pre amp out and DAC streamer. Used in recording studio for A/B testing of streaming DACs. Performed as needed. No distortion added to signals. Also tested by audio engineer. Thumbs up. Recommended ## Features - 3 In 1 Out XLR Switching: Connect up to 3 balanced stereo XLR audio sources to 1 output, making it easy to switch between different devices for convenient source comparison and system management. - Passive Balanced Audio Design: Built with a pure passive circuit that requires no external power, helping preserve the original signal path and maintain transparent balanced audio transmission. - Gold Plated XLR Connectors: Equipped with gold-plated XLR ports for stable contact, lower signal loss, and reliable long-term performance in both HiFi and professional audio setups. - Shielded Aluminum Construction: The full aluminum housing and shielded internal wiring help reduce outside interference, supporting cleaner signal transmission and a more dependable listening experience. - Ideal for HiFi and Studio Use: Designed for users who need to compare DACs, CD players, streamers, mixers, or other balanced source devices in desktop audio, home HiFi, and studio systems. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07QVKPR2V | | Audio Output Mode | Stereo | | Best Sellers Rank | #139 in Audio & Video Selector Boxes | | Brand | Nobsound | | Cable Type | XLR | | Color | Black | | Compatible Devices | Amplifier, Mixer, Player | | Connector Type | XLR | | Connector Type Used on Cable | XLR | | Customer Reviews | 4.7 out of 5 stars 279 Reviews | | Item Dimensions D x W x H | 4.13"D x 5.83"W x 2.72"H | | Manufacturer | Nobsound | | Mfr Part Number | GFJ721 | | Model Number | GFJ721 | | Number of Ports | 4 | | Power Source | Passive | | Unit Count | 1.0 Count | | Warranty Description | 18-Month Limited Warranty | ## Product Details - **Brand:** Nobsound - **Cable Type:** XLR - **Color:** Black - **Compatible Devices:** Amplifier, Audio Mixer, Speaker, Television, XLR MIC - **Connector Type:** XLR ## Images ![DoukAudio XLR Audio Switcher 3-In-1-Out: Balanced Passive Selector Stereo Converter for Multi Source Comparison Gold Plated Shielded Aluminum Studio HiFi Audiophile - Image 1](https://m.media-amazon.com/images/I/71iEgOs9s7L.jpg) ![DoukAudio XLR Audio Switcher 3-In-1-Out: Balanced Passive Selector Stereo Converter for Multi Source Comparison Gold Plated Shielded Aluminum Studio HiFi Audiophile - Image 2](https://m.media-amazon.com/images/I/61YRbxTovPL.jpg) ![DoukAudio XLR Audio Switcher 3-In-1-Out: Balanced Passive Selector Stereo Converter for Multi Source Comparison Gold Plated Shielded Aluminum Studio HiFi Audiophile - Image 3](https://m.media-amazon.com/images/I/6185-0BBYFL.jpg) ![DoukAudio XLR Audio Switcher 3-In-1-Out: Balanced Passive Selector Stereo Converter for Multi Source Comparison Gold Plated Shielded Aluminum Studio HiFi Audiophile - Image 4](https://m.media-amazon.com/images/I/71cw7ti9WQL.jpg) ![DoukAudio XLR Audio Switcher 3-In-1-Out: Balanced Passive Selector Stereo Converter for Multi Source Comparison Gold Plated Shielded Aluminum Studio HiFi Audiophile - Image 5](https://m.media-amazon.com/images/I/61ZVXapI7AL.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 ### ⭐⭐⭐⭐⭐ Device works perfectly. But it's not 'new' *by N***N on March 12, 2026* This is the perfect device for what was needed. It has been tested, and all three sets of inputs and the one set of outputs work as intended. Good design, good implementation. Sound coming out is completely transparent, as it should be. The form factor is just right, even if the cables do pull the device backward. The alternative of putting inputs and outputs on multiple sides has its own set of drawbacks, and I prefer this configuration. I have read detailed analyses that confirm what my ears tell me. No signal coloration and indiscernible crosstalk. The latter issue (crosstalk) has not been tested extensively in current setup, but I don't hear a thing. Downside: Amazon. It was clear to me as soon as I opened the device that it had been ... opened previously. Pretty sure this was a used device. There is a big Amazon sticker on the outside of the box and the item had been removed from its bag, inside. In addition, the box had an 'impact' indentation on one corner. Does any of this affect usage? Not that I can see. Time will tell. But what is clearly not right is charging full price when an item has been previously used. I'd love for Amazon to chime in and prove me wrong here. But all evidence points to being sold a used item, at new price. And that does not leave me a happy Amazon customer. Things are going the wrong direction, and long time customers notice. ### ⭐⭐⭐⭐⭐ Used in home for higher end audio equipment. Used in recording studio for critical A/B testing. *by A***T on April 10, 2026* Used for swapping between AV reveiver pre amp out and DAC streamer. Used in recording studio for A/B testing of streaming DACs. Performed as needed. No distortion added to signals. Also tested by audio engineer. Thumbs up. Recommended ### ⭐⭐⭐⭐⭐ Great product fast shipping *by C***S on February 26, 2026* Using the box to switch between two sets of XLR connectors to a headphone amplifier. Works great. Can't hear the sound being affected. Excellent value for money. Delivery faster than promised. ## 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) - Cable Matters 2-Pack Premium XLR to XLR Cables - 6ft, Male to Female Microphone Cable, Oxygen-Free Copper (OFC) Mic Cord, Black - Nobsound 1-IN-3-OUT XLR Audio Switch ; Balanced Audio Converter ; 3-Way Stereo Passive Audio Selector Switcher (MC103 Pro 3-Out) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/151663618-doukaudio-xlr-audio-switcher-3-in-1-out-balanced-passive](https://www.desertcart.jp/products/151663618-doukaudio-xlr-audio-switcher-3-in-1-out-balanced-passive) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-05-08*