ALPS Resistance Stepping Dual Volume Potentiometer RH2702-50KA Exponential Type: The audio input adjusts the volume, fever amplifier. Oscillators, filters, waveform generators...etc.Brief introduction: Ordinary potentiometers produce a "click" sound when adjusting the volume, and the left and right volumes are unbalanced, making it easy to introduce noise. This potentiometer overcomes these problems, has stable performance over a long period of time, and is used more often in high-end amplifiers.Colour:As shownMaterial:Plastic + MetalSize: 25mmPackage Contents:1 x Rotentiometer(A50KX2)Only the above package content, other products are not included.Note: Light reflection and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.