The MIP1 is a two gang wallplate with a mono version of the Whirlwind pcDI computer interface device featuring RCA and 3.5mm stereo input jacks and an additional speaker input terminated with a 16 Ohm load resistor. The line and speaker inputs are summed together and sent to the Dimax transformer which balances the output signal and attenuates it by 20 dB. A Ground Lift switch breaks the ground connection between the inputs and the output screw terminal. The MIP1 plates have an additional female XLR for connection of a separate mic channel to the plate.