This portable device allows for high quality sound and quick switch between stereo and mono for flexibility on stage. Ideal for drummers, bands, studio recording, and singers. Take your music to level. The Wired in-Ear Monitor Amplifier is a and portable headphone amplifier that can be easily clipped to your waist, whether you arefixed in one position or moving around on site, providing convenience without sacrificing performance. Adjustable Volume & Channel Control: You can adjust the volume andchannel at any time. Whether you are a keyboardist, drummer, guitarist or bassist, it can provide you with the best headphone amplifier solution to enjoy a high-quality personal monitoring system. Superior Sound Quality:a supercompact design, and amazing sound quality and signal amplification capabilities. It can help you hear yourself and the band's sound more easily. Color: Black Material: plastic Package Contents: 1 x Headphone Amplifier 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.