2X Desktop Fader Volume Controller — 6.5mm Interface for Computer, Speaker & Amplifier

Plug-and-play volume controller that requires no external power supply. Features only 1 pair of 6.5mm interface input and output for simple, direct connections. Audio performance: 6.5mm volume controller with a lossless output design that preserves sound quality, producing a smooth, transparent tone and a stable, clear, pure audio signal. Suitable for general use and in professional recording studios to meet different listening needs. Built from iron with fine workmanship and an all-metal casing. The 6.5mm interfaces are anti-interference and anti-rust, making the unit sturdy and designed for long service life.