Description: 4 CHANNEL STEREO HEADPHONE AMPLIFIERS- Ultra-low noise output 4 channel high power stereo amplifier with output level control for each channel, compatible with 3.5MM and 6.35MM headphones(No converter adapter required) ULTRA-LOW-NOISE - This headphone amplifier circuit is designed to be anti-crosstalk and ideal for splattering up to 4 audio signals or headphones. Enjoy an ultra-low noise monitor distribution and music system S/M MODE - Stereo/mono switch button to switch freely according to the type of input audio.Compatible with 1/4 inch and TRS plugs.Ultra-compact headphone amplifier system for studio and stage applications Colour: Blue Material: Plastic Package Contents: 1 x Headphone Amplifier 1 x Data Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.