---
product_id: 762213755
title: "Fosi Audio VOL20 Black Bluetooth Volume Control Knob, USB Multimedia Controller for PC/Gaming/Home Audio/Desktop, RGB Lighting Customization Multi-Function Button with Adjustment"
brand: "fosi audio"
price: "₨112"
currency: SCR
in_stock: false
reviews_count: 9
url: https://www.desertcart.sc/products/762213755-fosi-audio-vol20-black-bluetooth-volume-control-knob-usb-multimedia
store_origin: SC
region: Seychelles
---

# Customizable 4-mode RGB lighting Bluetooth + USB-C dual connectivity All-metal CNC-machined zinc alloy build Fosi Audio VOL20 Black Bluetooth Volume Control Knob, USB Multimedia Controller for PC/Gaming/Home Audio/Desktop, RGB Lighting Customization Multi-Function Button with Adjustment

**Brand:** fosi audio
**Price:** ₨112
**Availability:** ❌ Out of Stock

## Summary

> 🎛️ Elevate your audio game with the VOL20—where precision meets style.

## Quick Answers

- **What is this?** Fosi Audio VOL20 Black Bluetooth Volume Control Knob, USB Multimedia Controller for PC/Gaming/Home Audio/Desktop, RGB Lighting Customization Multi-Function Button with Adjustment by fosi audio
- **How much does it cost?** ₨112 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/762213755-fosi-audio-vol20-black-bluetooth-volume-control-knob-usb-multimedia)

## Best For

- fosi audio enthusiasts

## Why This Product

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

## Key Features

- • **Ambiance on Demand:** Switch between constant, auto-off, spectrum cycling, or off RGB lighting modes to match your vibe.
- • **Premium Metal Feel:** Crafted from CNC-machined zinc alloy, delivering a weighted, slip-free, and durable experience.
- • **Plug & Play Simplicity:** Compatible with PCs, Macs, mobiles, and more—no complex setup, just instant control.
- • **One Knob, Total Command:** Play, pause, skip, mute, and adjust volume—all at your fingertips with a multifunctional knob.
- • **Seamless Volume Mastery:** Effortlessly control audio with Bluetooth wireless or USB-C for real-time precision.

## Overview

The Fosi Audio VOL20 is a premium Bluetooth and USB-C volume control knob designed for professionals, gamers, and audiophiles. Featuring a robust CNC-machined zinc alloy body, multifunctional control for playback and volume, and customizable RGB lighting, it offers seamless plug-and-play compatibility across multiple devices. Ideal for desktop setups, it combines tactile precision with stylish ambiance customization.

## Description

Product description New Companion for Your Media Center Built with a robust zinc alloy, VOL20 offers Bluetooth and USB connectivity. It features customizable RGB lighting, allowing adjustment to your own preference. Providing plug-and-play ease, it enhances your volume control experience. Connection Method: Bluetooth/USB Bluetooth Connection Range: ≥10m Lighting Modes: Constant Light Mode/Light Off Mode/Auto-Off after 5 Seconds of Inactivity/Spectrum Cycling Functions: Volume Up/Down; Previous Track/Next Track; Play/Pause; Mute/Unmute Multimedia Volume Control Knob with Multi-Function Instantly adjust the volume to significantly enhance your desktop experience. Customizable RGB Lighting for More Vibes Offers constant on(customizable color), off, auto-off after 5 seconds, and spectrum cycling modes. CNC All-Metal Zinc Alloy Texture and lasting durability while enhancing the weight and stability of the product. Remote Volume Adjustment Saves space and keeps desks tidy with up to 10-meter remote connections. Infrequent Recharging Needed Enjoy 15 hours of operation with lighting effects on and up to 500 hours with them off. Ease of Use Change Chroma Effects and Switch Bluetooth Mode The Volume On-the-Fly Rotate the Dial to Your Preferred Volume Level. Plug-and-Play with No Extra Drivers Needed Enjoy smooth and precise volume control at your fingertips. Non-Slip Pad& On/Off Switch Ensures consistent, slip-free adjustments for optimal adjustment. Which devices are compatible with the VOL20? The VOL20 is compatible with digital audio sources that support USB or Bluetooth peripherals, including PCs, Macs, laptops, mobile phones, tablets, digital audio players, and streamers. Which devices are compatible with the VOL20? The VOL20 is compatible with digital audio sources that support USB or Bluetooth peripherals, including PCs, Macs, laptops, mobile phones, tablets, digital audio players, and streamers. Can VOL20 be used with Apple TV? VOL20 can be used with Apple TV, but the connected TV must support HDMI CEC functionality. Can VOL20 be used with Apple TV? VOL20 can be used with Apple TV, but the connected TV must support HDMI CEC functionality. Why can't my computer detect the VOL20 in pairing mode? If the VOL20’s blue light is solid instead of flashing, it's connected to another device. Delete the VOL20 from any previously paired devices, then try connecting again from your computer. Why can't my computer detect the VOL20 in pairing mode? If the VOL20’s blue light is solid instead of flashing, it's connected to another device. Delete the VOL20 from any previously paired devices, then try connecting again from your computer. Why does Bluetooth disconnect after PC restarts, though wired works fine? Bluetooth reconnects automatically. If the USB is connected, it takes priority. Disconnect the USB cable to allow Bluetooth to reconnect. Why does Bluetooth disconnect after PC restarts, though wired works fine? Bluetooth reconnects automatically. If the USB is connected, it takes priority. Disconnect the USB cable to allow Bluetooth to reconnect.

Review: Excellent Product - Works perfectly out of the box. Very heavy and substantial. Use it exclusively instead of keyboard controls.
Review: A disappointment due to poor engineering design and bad Bluetooth functionality - Major disappointment. So the VOL20 did feel “solid” metal heavy as I hoped, and I could get it to control my iPhone volume remotely, two BIG issues: remote control stops working when USB charger is plugged in (a complaint many have posted online..and yes, I used a USB power-only…no PC connection), plus could not get the VOL20 to work with many Bluetooth-supported audio devices like my Sony stereo receiver to remotely control stereo/CD/media center volume.

## Features

- Multimedia Volume Knob: The VOL20 is a versatile desktop volume controller with Bluetooth wireless and USB-C connectivity, offering real-time volume adjustments. Perfect for music lovers, gamers, and professionals who demand precise volume control
- Multi-Functional Knob: Simple yet versatile, the knob's button lets you easily control play, pause, previous track, next track, mute, and volume adjustment. With just one knob, you can conveniently manage all your music playback controls
- All-Metal Build: Precisely crafted from zinc alloy using CNC machining, ensuring a premium feel and lasting durability. The large 55mm diameter design adds substantial weight, providing a stable and slip-free experience during operation
- Customizable RGB Lighting: Offers constant on, auto-off after 5 seconds, spectrum cycling, and off modes. Four modes at your fingertips—freely switch between colors and lighting modes to create the perfect ambiance just the way you like it
- Effortless Installation: Compatible with digital audio sources that support USB or Bluetooth peripherals, including PCs, Macs, laptops, mobile phones, tablets, digital audio players, and streamers. Simply plug and play with no complicated setup required
- NOTE: The VOL20 does not support charging with fast-charging adapters and cables, otherwise it may damage the product

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0FGNQNCHL |
| Additional Features | Volume Control Knob |
| Best Sellers Rank | #3,847 in Computer Audio & Video Accessories |
| Brand | Fosi Audio |
| Brand Name | Fosi Audio |
| Color | Black |
| Compatible Devices | Personal Computer, Laptop, Smartphone, Tablet |
| Connectivity Technology | USB |
| Connector Type | USB |
| Control Method | Touch |
| Control Type | Knob Controller |
| Customer Reviews | 3.4 out of 5 stars 19 Reviews |
| Hardware Interface | USB |
| Hardware Platform | USB-C, Bluetooth |
| Human Interface Input | Buttons, Dial |
| Included Components | 1* 2-in-1 USB-A/C to USB-C Cable, 1* Fosi Audio VOL20 Volume Control Knob, 1* User Manual |
| Instrument Key | Any |
| Item Weight | 0.34 Kilograms |
| Manufacturer | Shenzhen Foresight Technology Co., Ltd. |
| Model Number | VOL20 BLACK |
| Platform | Not Machine Specific |
| Special Feature | Volume Control Knob |
| Supported Software | Ableton Live |
| Unit Count | 1.0 Count |
| Warranty Description | 24-month manufacturer. |

## Product Details

- **Audio Output Mode:** Stereo, Analog
- **Brand:** Fosi Audio
- **Compatible Devices:** Personal Computer, Laptop, Smartphone, Tablet
- **Hardware Interface:** USB
- **Platform:** Not Machine Specific

## Images

![Fosi Audio VOL20 Black Bluetooth Volume Control Knob, USB Multimedia Controller for PC/Gaming/Home Audio/Desktop, RGB Lighting Customization Multi-Function Button with Adjustment - Image 1](https://m.media-amazon.com/images/I/51jfwbB9i1L.jpg)
![Fosi Audio VOL20 Black Bluetooth Volume Control Knob, USB Multimedia Controller for PC/Gaming/Home Audio/Desktop, RGB Lighting Customization Multi-Function Button with Adjustment - Image 2](https://m.media-amazon.com/images/I/710Bi7PSrdL.jpg)
![Fosi Audio VOL20 Black Bluetooth Volume Control Knob, USB Multimedia Controller for PC/Gaming/Home Audio/Desktop, RGB Lighting Customization Multi-Function Button with Adjustment - Image 3](https://m.media-amazon.com/images/I/61eguer5UKL.jpg)
![Fosi Audio VOL20 Black Bluetooth Volume Control Knob, USB Multimedia Controller for PC/Gaming/Home Audio/Desktop, RGB Lighting Customization Multi-Function Button with Adjustment - Image 4](https://m.media-amazon.com/images/I/615rHtrggeL.jpg)
![Fosi Audio VOL20 Black Bluetooth Volume Control Knob, USB Multimedia Controller for PC/Gaming/Home Audio/Desktop, RGB Lighting Customization Multi-Function Button with Adjustment - Image 5](https://m.media-amazon.com/images/I/61sVQkig5KL.jpg)

## Questions & Answers

**Q: Which devices are compatible with the VOL20?**
A: The VOL20 is compatible with digital audio sources that support USB or Bluetooth peripherals, including PCs, Macs, laptops, mobile phones, tablets, digital audio players, and streamers.

**Q: Can VOL20 be used with Apple TV?**
A: VOL20 can be used with Apple TV, but the connected TV must support HDMI CEC functionality.

**Q: Why can't my computer detect the VOL20 in pairing mode?**
A: If the VOL20’s blue light is solid instead of flashing, it's connected to another device. Delete the VOL20 from any previously paired devices, then try connecting again from your computer.

**Q: Why does Bluetooth disconnect after PC restarts, though wired works fine?**
A: Bluetooth reconnects automatically. If the USB is connected, it takes priority. Disconnect the USB cable to allow Bluetooth to reconnect.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Product
*by P***S on September 25, 2025*

Works perfectly out of the box. Very heavy and substantial. Use it exclusively instead of keyboard controls.

### ⭐ A disappointment due to poor engineering design and bad Bluetooth functionality
*by M***M on January 16, 2026*

Major disappointment. So the VOL20 did feel “solid” metal heavy as I hoped, and I could get it to control my iPhone volume remotely, two BIG issues: remote control stops working when USB charger is plugged in (a complaint many have posted online..and yes, I used a USB power-only…no PC connection), plus could not get the VOL20 to work with many Bluetooth-supported audio devices like my Sony stereo receiver to remotely control stereo/CD/media center volume.

### ⭐⭐⭐ Works but it's a little buggy at times.
*by T***S on March 29, 2026*

Functions as intended but it is a bit wonky. 3 1/2 stars. When charged up and paired with the computer it works fine. Has multiple modes and it seems to execute built in routines based on what it thinks the user is trying to do and gets that wrong every time. Properly paired and charged it does work fine.

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-07-01*