Presonus HP60, 6-channel headphone amp. Six independent ultra-low noise, high output headphone amplifiers (150mW per channel), 2 sets of stereo inputs (A/B) with balanced jack connectors, stereo external input point on each channel for "more me" with trim control, mix control between inputs A and B, talkback function with level control for external XLR microphone. Direct stereo line output on each channel (1/4" jack).