Tiny Little USB Volume Knob from Tiny Little Things on Tindie
Amazon.com: USB Volume Control Knob - EMEET USB Multimedia Controller Knob with One-Click Mute Function and Music Switching, Customize Mute Button Mode, Multimedia Control Knob Supports Windows and Mac : Musical Instruments
PC Volume Control USB Volume Control Knob Speaker Knob Switch Lossless Sound | eBay
Usb Volume Control Knob One Key Mute Volume Controller For Computer Laptop Plug And Play Pc Speaker Audio Adjuster Compatible - Electric Instrument Parts & Accessories - AliExpress
USB Volume Control Audio Volume Controller Adjuster for Computer - Walmart.com
Fostex Desktop Volume Controller with Built-In PC-100USB-HR-2
USB Multimedia Control Knob Volume Controller With Dual 3.5mm Audio Ports One-Key Mute 3 Volume Control Modes Audio Volume - AliExpress
USB Volume Control Knob for PC Audio | Reverb
Usb Volume Control, Lossless Pc Computer Speaker O Volume Controller Knob, Adjuster Digital Control With One Key Mute - Mic Stand - AliExpress
USB Volume Control Knob Computer Audio Volume Controller Adjuster Supports Mute Function with USB Cable for Win XP/Vista/7/8/10/ Mac Systems | Wish
Amazon.com: LITROK One Key Mute USB Volume Controller PC Computer Speaker Audio Multimedia Volume Remote Control Adjuster Support for Win7/8/10/XP/Mac/Vista/Android/iOS (Black knob) : Electronics
Amazon.com: USB Volume Control Multimedia Controller Knob PC Volume Control Knob Speaker Audio Multimedia Volume Remote Control Adjuster with One Key Mute Function Support Win7/8/10/XP/Mac/Vista/Android/iOS : Electronics