I am doing a large TV room for a client and would like to use an Amp for the ARC function within the TV. However, this is a LARGE room and I would like to do a large 3rd party amp somehow using a speaker to line converter. Any thoughts on this? I tried a basic speaker to line converter on an Amp previously but was unsuccessful. I got very distorted signal regardless of volume level. So,, big room need big power than Amp supplies but want functionality of Audio Return feature of amp, just wish it had 300W per channel!