Presonus HP60, 6-Channel headphone amplifier, 6x Independent ultra low-noise headphone amplifier, 150 mW per channel, With output control, 2x Stereo input (A and B) with symm. 6.3 mm jack connectors, Additional stereo input for every channel with level control, Mix control between input A and B, Talkback for separate microphones with XLR connector, Direct stereo line output on every channel (1/4"" jack), Size: 19""/1 U, Incl. Power supply