Description The Behringer HA400 Microamp Ultra Compact 4 Channel Stereo Headphones Amplifier is a simple, reliable solution for distributing audio to multiple listeners. Featuring four independent stereo outputs with individual level controls, it allows up to four pairs of headphones to be driven simultaneously with clear, distortion free sound. Its ultra compact design makes it ideal for studios, rehearsals, classrooms, or any situation where multiple listeners need consistent, high quality monitoring in a portable, affordable package. Features: Ultra-compact headphone amplifier system for studio and stage applications 4 independent stereo high-power amplifier sections Highest audio quality with virtually all types of headphones even at maximum volume Phones Level control per channel DC 12 V adapter included Designed and engineered in Germany