FX-AUDIO M1 Mini Active Volume Control Knob Volume Controller 3.5mm Audio Adjuster PC Amplifier Features: Application: use it for watching videos, playing games, even will be the best volume controller for various activities, wedding, celebration, meeting, performing and etc. Supports for Win10/8/7/Vista/XP/Mac. Small and delicate, aluminum case, CNC machining process, gold-plated pins, made of metal shell and ALPS rotary shaft. 3.5mm audio in, connect tablet PC, computer, phone, audio player. 3.5mm audio out, connect power amplifier, active speaker, headphone amp. Simple and easy to use, just insert it into your computer, then it will start to work; If you use it with an OTG cable, it can also work for the phone. Mini portable, lightweight, can be taken with you at any time to use, saving space. Specifications: Item Type: Volume Controller Material: Aluminum Color: Black Package Size: Approx.9*7.5*5.5cm / 3.54*2.95*2.17in Package Weight: Approx.88g / 3.1oz Package List: 1 * Volume Controller 1 * User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store