I have an old Sony shelf system that I use for my CDs, then started to do bluetooth streaming to my AMPLIFi 150. I picked up an Alto PA system a few months ago for use with my synth rigs so I have greater stereo separation than with my Bose L1. Digging through my adapters, cables etc. I found a 1/8" TRS to dual XLR cable, plugged it into my computer's audio - wow! The Sony shelf system is gathering dust, the AMPLIFi 150 is used with my Helix or out on the porch. Sounds much better than my nearfields ...and the sub will shake the dishes out of the cabinets... anyone else doing this?