Behringer AMP800 V2 4ch Stereo Headphone Amp 

If you’re tracking more than one musician at a time, or if everyone in a group wants to listen to a playback, you need a monitor distribution system. The compact, flexible AMP800 can power up to 8 pairs of headphones and up to 2 different stereo mixes. The AMP800 features 4 totally independent stereo high-power amplifier sections, each with dual outputs. 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 individual mixes, selectable for all 4 of the headphone amplifiers. If you need to accommodate more than 8 listeners, the convenient Link Out A enables cascading additional AMP800s. Long-term reliability is guaranteed thanks to high-quality potentiometers and illuminated switches, and our ultra low-noise audio operational amplifiers provide outstanding sonic performance.

• 2 balanced stereo main inputs with independent Level and Balance controls for individual mixes, selectable for all 4 headphone amplifiers
• Accurate 6-segment LED main level meter for precise level indication of both line inputs
• 2 headphone outputs per channel (front and rear panel) allow a total of 8 headphones to be simultaneously connected
• Parallel Link Output allows cascading of several headphone amplifiers
• High-quality potentiometers and illuminated switches for long-term reliability
• All Mini Series models can be stacked on top of each other to create an ultra-compact signal processor solution