Hi Wayne If I may offer this bit of experience to Larry, I tried both the etched board and hardwire on the Theater 4's and even trying hard to hear a difference could hear none. I used to espouse the hardwire theory over PC's but lately with speaker xovers and amps I really have come around to the PC camp, they are very accurate well isolated and easily replicated; and from one who would like to prove that hard wire sounds better, to be honest I can't. I am aware of stray capacitances and RFI issues but I personally don't hear any advantage to hardwire. As far as the Pi pre-built I tried biamping with Audion 2-way xover but went back to the Pi xover because it just sounded better. Hope this helps, J.R. (The Audion is a well designed xover using discrete components throughout)