The mackies are fed by XLR cables. I have a Sony s-master surround. Also using PlayStation 4 for Blu-ray. The 5.1 sounds pretty good ! Is it possible to run the active speakers (Mackie thumps) along with the surround ? Or even just the Mackie thumps ? I've seen pictures or home theater setups using pa speakers . The s-master surround and PlayStation both have optical outputs . I've heard you can use the headphone output, but would that be mono or stereo ? What adapters would I need ? Thanks