The PROformance PDI-1's simple design offers a 1/4" input jack, a loop-through 1/4" output, and male XLR output. Plug any instrument-level signal (and some line level) into the box, interface with a standard XLR mic cable into the Lo-Z output, and you're ready to plug the output "directly" into a mixing console. Input is switchable from the instrument to the speaker.