Bi-Amping 2 Interconnects or Y Cable?

Perhaps Al can comment more on this but I see an issue with the simple y-adapter (been there, done that) you are going to use. When you connect both inputs of one amp to one pre out, you are changing the sensitivity because the input impedance of the amp is cut in half on each channel. I think Al was thinking on this when he mentioned the buffering on the pre outputs. This can change the sonic performance and behavior of the amps. So, next you need to get an active crossover between your pre and amps. Then all of the components see the load they were designed for. It is more money in cables and the crossover but the results are much better than what you'll get with a y-adapter. MY .02, YMMV, and all that.

Or! You could add shunt resisters on the amp inputs. ;-)

Thanks, Al. I didn't mean to suggest a mis-match, only that IME it can change the sound, usually a reduction in bass impact.

Thanks again, Al!