Ok, I've got a presentation room at work with a projector/audio system setup... An amp that takes audio from either a DVD player or a laptop and outputs to the speakers in the front of the room. It normally has 2 RCA stereo inputs, one for DVD audio, one for PC audio. One of the inputs has died though, and I don't have time to get a replacement unit and have it invoiced in time for the December end of year cutoff. The amp has 7 balanced inputs on it as well, I'm wondering if there's a way I can hook up the stereo signal to one of the balanced inputs and play it as mono, without blowing anything up? tldr: Can a standard stereo audio signal be wired to a balanced line input and played as mono, without any extra hardware?