Input Connections: 2 - 1/4" TRS Balanced, 5 - TRS stereo, 1- XLR balanced mic input Output Connections: 4 - 1/4" TRS Stereo headphone Maximum Input Level: +20dBu Headphone Output: 150mW/ channel max. Frequency Response: 10Hz to 40KHz +/- 1dB Total Harmonic Distortion: <0.010% (typical) Dimensions: 1.75"H x 5.9"W x 6.5"D (44.5mm x 150mm x 165mm) Weight: 2.5 lbs. (1.14 kg) with power supply and packaging Power Requirements: USA - 120vac 60 Hz Export units configured for country of destination