Hi, I have a question similar to this one, but my situation is a little different. With my amp, which is a Sony STR-DA5800ES, I can select either 4 Ohms setting or 8 Ohms setting. My speakers are listed at 6 Ohms nominal / 3.5 Ohms minimum and I have them bi-amped. Would I be better off selecting the 4 Ohms setting or the 8 Ohms setting, or does it really matter? Thanks.