My experience with biwiring and biamping differs from Dave's.
I also had Apogee Duetta Signature Speakers and tried them in both biamped and biwired configurations with one amp. In my experience, the sonic difference was not noticeable; however the amplifiers were much cooler when biamped.
I currently have Von Schweikert VR 6 speakers and although they are set up for biwiring, and could also be biamped, neither choice is currently on my list of things to do.
I also had Apogee Duetta Signature Speakers and tried them in both biamped and biwired configurations with one amp. In my experience, the sonic difference was not noticeable; however the amplifiers were much cooler when biamped.
I currently have Von Schweikert VR 6 speakers and although they are set up for biwiring, and could also be biamped, neither choice is currently on my list of things to do.