Get this ultra-compact but ultra-flexible headphone amplifier system, and you will absolutely love it! It boasts 4 totally independent stereo high-power amplifier sections. The highest sonic quality with virtually all types of headphones is assuredeven at maximum volume levels. You can use the phones level control plus the accurate 6-digit LED output meter per channel for easy level monitoring. There are 2 balanced stereo main inputs with independent Level and Balance controls for individualmixes, selectable for all 4 headphone amplifiers. • Ultra-compact 9.5" headphone amplifier system for studio and stage applications • Totally independent stereo high-power amplifier sections • Phones Level control plus accurate 6-digit LED output meter per channel for easy level monitoring • Balanced stereo main inputs with independent Level and Balance controls for individual mixes, selectable for all 4 headphone amplifiers