TX-NR626 How to bi-amp the main speakers | This video shows you how to improve audio quality by bi-amping your main speakers (if supported). | By Onkyo Europe | Facebook
Onkyo TX-NR616 Using Dipole Speakers, Using Powered Subwoofers, Bi-amping the Front Speakers
How To Bi Amp An AV Receiver [With Sound Comparison] - YouTube