Yeah, it's mostly unnecessary and fruitless unless you're talking about real bi-amping, i.e. active bi-amping which is more involved....more a marketing thing.....but almost no avrs ever had an active crossover bi-amp feature (a few Onkyos I know of several years back did). Here's an article on the subject of bi-wiring and passive and active bi-amping....https://www.audioholics.com/frequent-questions/the-difference-between-biamping-vs-biwiring