Details Connects up to 4 IFB feeds to matrix ports Individual or multiple earbuds or headphones used directly from each port No external power required Rear-mounted wet/dry switch Transformer-coupled signal from port to XLR output Item Code IFB-104 Technical Specifications Indicators: \"Power-on\" LED Connectors Program Input: (4) 3-pin XLR female To Matrix Frame: (4) RJ-45 Talent: (4) 3-pin XLR male DC Power: (1) 3-pin XLR male; (1) 3-pin XLR female Program Input Type: Transformer isolated Impedance: 600Ω bridging Level: 0 dBv Headphone Talent Receiver Outputs Impedance: 600KΩ transformer balanced Power: 1 mW into 600Ω Line Input (2-pair talk to matrix) Type: Transformer balanced Impedance: 600KΩ Level: 0 dBv nominal Frequency Response: 100Hz-15kHz, +/-2dB Environmental Operating Temperature: 0º - 50ºC (32º - 125ºF) Humidity: 20% to 90%, non-condensing Dimensions 1.75 x 19 x 2in (HxWxD) (89 x 483 x 51mm) Weight 1.8lbs (0.82kg)