This portable device allows for high quality sound and quick switch between stereo and mono for flexibility . 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.