Great product in you have pre-wired speaker wire
I was looking for a solution to connect my Bose V35 speakers. I had the house pre-wired and this produce fit perfectly to connect all the speakers. I did not use this for the woofer though, I connected this directly to the unit. It took some time to connect the right speaker to the right point though.
Pros: Very convenient if you have pre-wired speakers. Without this, we would end up with so many connections.
Cons: Not sure whether it is the room/speakers/this connector. The speakers don't sound great even after calibration.