DI INJECTION BOX Passive stereo injection box for PC. It is the solution for connecting PCs, laptops, tablets or phones to a PA system, ideal for DJs and professionals. It integrates two STLX shielded transformers that work with the Ground Lift switch to eliminate any noise or hum. Inputs 2x 1/4' Jack, 2x RCA or stereo 1/8' mini-Jack. Outputs: 2x XLR (stereo/mono). -12dB attenuator. Stereo/mono sum switch. Built in an impact-resistant metal box. Does not require Phantom or batteries.