---
product_id: 762213755
title: "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: "NT$3273"
currency: TWD
in_stock: true
reviews_count: 8
category: "Fosi Audio"
url: https://www.desertcart.tw/products/762213755-vol20-black-bluetooth-volume-control-knob-usb-multimedia-controller-pc
store_origin: TW
region: Taiwan
---

# Customizable 4-mode RGB lighting Bluetooth + USB-C dual connectivity All-metal CNC-machined zinc alloy build 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:** NT$3273
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 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?** NT$3273 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/762213755-vol20-black-bluetooth-volume-control-knob-usb-multimedia-controller-pc)

## 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

desertcart.com: 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 : Musical Instruments

Review: Really nice volume control, with good quality. - I love this thing. For me this is more of a fidget toy to be honest. I have my Bluetooth headphones and they have volume controls on them so there is really no need for an additional knob, but I enjoy using it so much anyway. I love that it is metal. On my system (windows 11, 64bit) it moves volume by two increments. I don't mind it, but is something to be aware of. Maybe I'm just missing something in the settings. I do have light turned off, and the battery life has been very long. Haven't charged it in weeks.
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 |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #10,966 in Musical Instruments ( See Top 100 in Musical Instruments ) #5 in Digital Audio Workstation Controllers |
| Customer Reviews | 3.5 3.5 out of 5 stars (14) |
| Date First Available | October 8, 2024 |
| Item Weight | 12 ounces |
| Item model number | VOL20 BLACK |
| Manufacturer | Shenzhen Foresight Technology Co., Ltd. |
| Package Dimensions | 4.76 x 4.72 x 2.32 inches |

## 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

![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)

## 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

### ⭐⭐⭐⭐⭐ Really nice volume control, with good quality.
*by S***I on October 31, 2025*

I love this thing. For me this is more of a fidget toy to be honest. I have my Bluetooth headphones and they have volume controls on them so there is really no need for an additional knob, but I enjoy using it so much anyway. I love that it is metal. On my system (windows 11, 64bit) it moves volume by two increments. I don't mind it, but is something to be aware of. Maybe I'm just missing something in the settings. I do have light turned off, and the battery life has been very long. Haven't charged it in weeks.

### ⭐ 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.

### ⭐⭐⭐ Solid build, looks great. Poor battery life
*by L***C on February 16, 2026*

Nice little device. Built well, and performs well. However, i feel like i am constantly charging it.

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-05-12*