---
product_id: 70811005
title: "OSD Audio 300W in Wall Volume Control Impedance Matching for Home Speakers, Rotary Knob White SVC300"
brand: "osd audio"
price: "฿7608"
currency: THB
in_stock: true
reviews_count: 5
category: "Osd Audio"
url: https://www.desertcart.co.th/products/70811005-osd-audio-300w-in-wall-volume-control-impedance-matching-home
store_origin: TH
region: Thailand
---

# 300W power handling 3 color-matched wall plates 12-step pop-free rotary control OSD Audio 300W in Wall Volume Control Impedance Matching for Home Speakers, Rotary Knob White SVC300

**Brand:** osd audio
**Price:** ฿7608
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your home audio game with flawless control and style!

## Quick Answers

- **What is this?** OSD Audio 300W in Wall Volume Control Impedance Matching for Home Speakers, Rotary Knob White SVC300 by osd audio
- **How much does it cost?** ฿7608 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/70811005-osd-audio-300w-in-wall-volume-control-impedance-matching-home)

## Best For

- osd audio enthusiasts

## Why This Product

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

## Key Features

- • **Power Up Your Sound:** Handles a robust 300W per channel, perfect for a single pair of speakers without compromise.
- • **Style That Blends In:** Includes White, Ivory, and Almond plates to flawlessly match your wall décor and elevate your space.
- • **Effortless Installation:** Fits standard gang boxes with 2.9" depth and accepts up to 14-gauge speaker wire for quick, clean setup.
- • **Seamless Volume Control:** 12-step rotary knob ensures smooth, pop-free adjustments for the perfect listening level every time.
- • **Customizable Impedance Matching:** Adjustable jumpers support up to 8 pairs of 8Ω speakers, protecting your gear and optimizing performance.

## Overview

The OSD Audio SVC300 is a high-quality in-wall volume control designed for home speakers, delivering 300W per channel with adjustable impedance matching to protect your system. Featuring a smooth, 12-step rotary knob for pop-free volume adjustments and three color-matched wall plates, it fits standard gang boxes and supports up to 14-gauge wiring for easy installation. Ideal for professionals seeking precise audio control with seamless integration into any home environment.

## Description

The OSD In-Wall Home Theater Speaker Volume Control is a unique design to switch the volume of speakers independently from the rest of the house. Mount it on a wall to use in varying locations for soft or high volume. Optimal Speaker Design is engaged in the design, engineering, and distribution of high-quality home and commercial audio products. Our products range in complexity from simple in-ceiling speakers to whole house audio systems—all with beautiful styling and high-end sound quality.Our U.S.-based research, development and design team, is supported by a network of cutting-edge acoustical, mechanical and electrical engineers. Together, we create products that combine the latest technology with ease of use for a quality sound experience.With extensive product and application knowledge, our exceptional team provides you with custom solutions to create the perfect audio solution.

Review: Works as promised. Easy to install. Appears to be of utmost quality.
Review: I researched many different volume control knobs offered on desertcart and decided to give this one a go! The installation was a breeze! You will need a box extender as these units are quite deep but they’re easy to find on desertcart! When it comes to the knob itself it is very well built, there’s no pausing in the audio when adjusting the level (as others have mentioned) and you won’t be disappointed! Note: The instructions could have been a little clearer when setting the impedance matching toggle... also, I didn’t see this mentioned anywhere but the higher you set the toggle example 1/2x -> 4x -> 8x you’ll notice a drop in the volume output from your speakers however that is to be expected! Overall, I was very happy with this control knob! Like the title says I ended up purchasing another one! The second one was a little temperamental at first but that was due to some wiring that needed to be replaced and due to a more powerful amplifier! I replaced some wires and reduced the volume on the amplifier and now all is awesome with this one too!

## Features

- POWER HANDLING: 300W Per Channel - Perfect for 1 pair of speakers
- IMPEDANCE MATCHING : Protect your speakers and amplifier, adjustable jumpers allow up to 8 pairs of 8ohm speakers
- 3 COLORS PROVIDED: You will receive White, Ivory, Almond plates to perfectly match your wall color
- INSTALLATION: Accepts up to 14-gauge speaker wire - Fits in a standard gang box with a depth of 2.9"
- POP-FREE CONTROL - Rotary Knob design delivers 12-step rotation pop-free control for a wide range of listening volumes

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B007U2GVY0 |
| Best Sellers Rank | 170,913 in Garden ( See Top 100 in Garden ) 306 in Weather Stations |
| Brand | OSD Audio |
| Circuit Type | parallel |
| Colour | white |
| Connectivity Protocol | wired |
| Connector Type | Quick Connect |
| Contact Material | Metal |
| Contact Type | Normally Open |
| Control Method | Touch |
| Controller Type | Remote Control |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,282) |
| Global Trade Identification Number | 00810281013374 |
| Included Components | removable and solderless terminals, decor plates |
| Item Dimensions | 12.7 x 7.6 x 10.2 centimetres |
| Manufacturer | OSD Audio |
| Material | Metal, Plastic |
| Model Number | OSD-SVC-300 |
| Mounting Type | Wall Mount |
| Number of Items | 1 |
| Number of Positions | 12 |
| Specification Met | No |
| Switch Type | Rotary |
| Terminal | Quick-connect |
| UPC | 810281013374 |
| Wattage | 300 watts |

## Product Details

- **Brand:** OSD Audio
- **Circuit type:** parallel
- **Connector type:** Quick Connect
- **Contact material:** Metal
- **Contact type:** Normally Open
- **Item dimensions L x W x H:** 12.7 x 7.6 x 10.2 centimetres
- **Material:** Metal, Plastic
- **Mounting type:** Wall Mount
- **Switch type:** Rotary
- **Terminal:** Quick-connect

## Images

![OSD Audio 300W in Wall Volume Control Impedance Matching for Home Speakers, Rotary Knob White SVC300 - Image 1](https://m.media-amazon.com/images/I/61NiTCA20XL.jpg)
![OSD Audio 300W in Wall Volume Control Impedance Matching for Home Speakers, Rotary Knob White SVC300 - Image 2](https://m.media-amazon.com/images/I/811fjPcXrDL.jpg)
![OSD Audio 300W in Wall Volume Control Impedance Matching for Home Speakers, Rotary Knob White SVC300 - Image 3](https://m.media-amazon.com/images/I/71YpvfXQ-bL.jpg)
![OSD Audio 300W in Wall Volume Control Impedance Matching for Home Speakers, Rotary Knob White SVC300 - Image 4](https://m.media-amazon.com/images/I/713gwmwaOyL.jpg)
![OSD Audio 300W in Wall Volume Control Impedance Matching for Home Speakers, Rotary Knob White SVC300 - Image 5](https://m.media-amazon.com/images/I/71vokYezD9L.jpg)

## Available Options

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

## Questions & Answers

**Q: how do I order white**
A: say it comes with all 3 trim colors

**Q: how do I hook up 4 8 ohm speakers?**
A: Two sets of two speakers. A-B and C-DConnect A-B in parallel; Connect C-D in parallel. Each set will therefore be 4 ohms per set. Then connect each set in Series and that will end up as being 8 Ohms

**Q: Please explain if the slider itself can be ivory, along with the plate or if the slider control is one color and the plates changeable?**
A: Hello, the plates, screws and slider pieces are the different colors.

**Q: Will this match the impedance for 3 speakers?**
A: Why would alejandro say you can only have 3 speakers.  The description clearly states "up to 8 pairs of 8ohm speakers" .

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***H on 21 November 2025*

Works as promised. Easy to install. Appears to be of utmost quality.

### ⭐⭐⭐⭐⭐ Review
*by B***Y on 29 July 2020*

I researched many different volume control knobs offered on Amazon and decided to give this one a go! The installation was a breeze! You will need a box extender as these units are quite deep but they’re easy to find on Amazon! When it comes to the knob itself it is very well built, there’s no pausing in the audio when adjusting the level (as others have mentioned) and you won’t be disappointed! Note: The instructions could have been a little clearer when setting the impedance matching toggle... also, I didn’t see this mentioned anywhere but the higher you set the toggle example 1/2x -> 4x -> 8x you’ll notice a drop in the volume output from your speakers however that is to be expected! Overall, I was very happy with this control knob! Like the title says I ended up purchasing another one! The second one was a little temperamental at first but that was due to some wiring that needed to be replaced and due to a more powerful amplifier! I replaced some wires and reduced the volume on the amplifier and now all is awesome with this one too!

### ⭐⭐⭐⭐⭐ Review
*by M***. on 15 July 2018*

The speaker volume control works exactly as promised. The screw terminals for attaching input and output wires increased the ease and flexibility of installation. The unit fits in a typical single gang box. I used the slider volume control in an external box to control outdoor patio speakers. The controller came with four face plates of different colors which are more than similar products from other sources.

## Frequently Bought Together

- OSD 300W in Wall Volume Control Impedance Matching for Home Speakers, Rotary Knob White SVC300
- Pyle Home 2-Way In-Wall In-Ceiling Speaker System - Dual 8 Inch 300W Pair of Ceiling Wall Flush Mount Speakers w/ 1" Silk Dome Tweeter, Adjustable Treble Control - For Home Theater Entertainment PIC8E

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-28*