Input Connectors:XLR female with gold contacts (1); Phono jacks with gold contacts (2)Output Connector:Terminal blockOutput Connections (5):Line: +, -, SHIELD; Mic: SHIELD (XLR pin 1), + (XLR pin 2), - (XLR pin 3)Frequency Response (line in):30 Hz to 20 kHz (??1 dB)Power Requirement:PassiveDimensions:Height: 4.13 in. 10.49 cm; Width: 1.7 in. 4.32 cm; Depth: 2.15 in. 5.47 cmMounting Box Req.:Width: 1.80 in. 4.57 cm; Depth: 1.75 in. 4.45 cm