---
product_id: 527129780
title: "SPRODIO Single Stereo to Mono Converter, RCA L/R audio adapter stereo to mono summing cable adapter SC21"
brand: "generic"
price: "8384 som"
currency: KGS
in_stock: true
reviews_count: 8
category: "Generic"
url: https://www.desertcart.kg/products/527129780-sprodio-single-stereo-to-mono-converter-rca-l-r-audio
store_origin: KG
region: Kyrgyzstan
---

# Passive, no power needed Stereo to dual mono summing Aluminum casing, durable & compact SPRODIO Single Stereo to Mono Converter, RCA L/R audio adapter stereo to mono summing cable adapter SC21

**Brand:** generic
**Price:** 8384 som
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your audio game—never miss a beat with SPRODIO’s sleek stereo-to-mono converter!

## Quick Answers

- **What is this?** SPRODIO Single Stereo to Mono Converter, RCA L/R audio adapter stereo to mono summing cable adapter SC21 by generic
- **How much does it cost?** 8384 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/527129780-sprodio-single-stereo-to-mono-converter-rca-l-r-audio)

## Best For

- generic enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Mini aluminum case fits anywhere, combining durability with sleek portability for on-the-go pros.
- • **Safe & Sound Design:** Passive circuitry ensures zero risk of output damage—way smarter than a risky Y-cable hack.
- • **Plug & Play Simplicity:** No external power or drivers needed—just connect and amplify your audio effortlessly.
- • **Seamless Stereo Summing:** Convert stereo inputs into two perfectly balanced mono outputs without signal loss or distortion.
- • **Versatile Audio Solution:** Ideal for home intercoms, subwoofers, and any setup needing clean mono output from stereo sources.

## Overview

The SPRODIO SC21 is a compact, passive RCA adapter that converts stereo line-level inputs into two summed mono outputs. Housed in a durable aluminum case, it offers a safe and electrically correct alternative to Y-cables, ensuring clean, distortion-free audio without external power. Perfect for professionals and audiophiles needing reliable mono output from stereo sources.

## Description

SPRODIO SC21 Stereo to Mono Converter is a L/R audio signal and provides two identical mono outputs. The input and output connections are both RCA connectors,It is the perfect solution for summing 2-channel/stereo line level outputs to a single channel/mono signal. It is superior and more electrically correct than using a Y cable which could cause damage to outputs.

Review: Worked as advertised. - Worked perfect. I used to drive my mono home intercom from my stereo entertainment system. Worked perfect and provided a nice combined mono output. No noticable distortion and minimum loss.
Review: Works As Expected - Working exactly as expected. I use it to connect a preamp that does not have a dedicated subwoofer output. The preamp does have an extra stereo right and left RCA out which I connect to the stereo side of this device and then run a single line from the mono side (right or left) to the one RCA Jack on the subwoofer. For me this is to ensure that tge bass frequencies from both channels are reaching the subwoofer.

## Features

- >this is a convert stereo input to two summed mono outputs to allow a single speaker to play both channels
- >It is the perfect solution for summing 2-channel/stereo line level outputs to a single channel/mono signal. It is superior and more electrically correct than using a Y cable which could cause damage to outputs
- >Input connectors: Stereo L/R RCA; Output connectors: 2 x Mono RCA
- >Passive circuitry, no external power required, plug and play
- >mini sturdy aluminum case, small and compact box

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BRZCGY29 |
| Best Sellers Rank | #994 in Audio & Video Connectors & Adapters |
| Brand | Generic |
| Date First Available | January 10, 2023 |
| Interface Type | RCA |
| Item Weight | 2.29 ounces |
| Item model number | SC21 |
| Manufacturer | SPRODIO |
| Material | Aluminum |
| Number of Channels | 2 |
| Number of Pins | 8 |
| Product Dimensions | 1.26 x 2.44 x 1.26 inches |
| UPC | 651357572629 |

## Product Details

- **Brand:** Generic
- **Interface Type:** RCA
- **Material:** Aluminum
- **Number of Channels:** 2
- **Number of Pins:** 8

## Images

![SPRODIO Single Stereo to Mono Converter, RCA L/R audio adapter stereo to mono summing cable adapter SC21 - Image 1](https://m.media-amazon.com/images/I/314rvXEVaVL.jpg)
![SPRODIO Single Stereo to Mono Converter, RCA L/R audio adapter stereo to mono summing cable adapter SC21 - Image 2](https://m.media-amazon.com/images/I/31F5Uaw9weL.jpg)
![SPRODIO Single Stereo to Mono Converter, RCA L/R audio adapter stereo to mono summing cable adapter SC21 - Image 3](https://m.media-amazon.com/images/I/416YJ4RNgGL.jpg)
![SPRODIO Single Stereo to Mono Converter, RCA L/R audio adapter stereo to mono summing cable adapter SC21 - Image 4](https://m.media-amazon.com/images/I/41ZE-dh7iSL.jpg)
![SPRODIO Single Stereo to Mono Converter, RCA L/R audio adapter stereo to mono summing cable adapter SC21 - Image 5](https://m.media-amazon.com/images/I/41vrrRA2FeL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked as advertised.
*by A***R on December 10, 2025*

Worked perfect. I used to drive my mono home intercom from my stereo entertainment system. Worked perfect and provided a nice combined mono output. No noticable distortion and minimum loss.

### ⭐⭐⭐⭐⭐ Works As Expected
*by K***N on January 14, 2026*

Working exactly as expected. I use it to connect a preamp that does not have a dedicated subwoofer output. The preamp does have an extra stereo right and left RCA out which I connect to the stereo side of this device and then run a single line from the mono side (right or left) to the one RCA Jack on the subwoofer. For me this is to ensure that tge bass frequencies from both channels are reaching the subwoofer.

### ⭐⭐⭐⭐⭐ Works as intended!
*by E***D on June 1, 2025*

I have on my desktop my stereo PC speakers and also an old CRT TV that I sometimes use as a secondary monitor for watching videos on. The CRT TV has only one RCA audio input jack. I could use an audio switcher to isolate the TV, but I prefer to use my main stereo speakers at a lower volume to provide some bass. Long story short, using a Y-splitter to lead to the stereo speakers and to the TV and then another Y-splitter (after a headphone-to-RCA stereo converter) to merge the stereo channels to mono means that my PC speakers will always output mono as well. This unit keeps that merge separate from any other split on the line, so I can now enjoy the TV in mono while my PC speakers retain full stereo. Brilliant!

## Frequently Bought Together

- SPRODIO Single Stereo to Mono Converter, RCA L/R Audio Adapter Stereo to Mono summing Cable Adapter SC21
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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-02-21*