Behringer AMP800 V2 4 Channel Stereo Headphone AmpAMP800 If youre 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. Altogether Now 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