I have an old Denon AVR-2307ci receiver and a Rogue Audio Sphinx (v2) integrated amp, and I'm trying to figure out the ideal way to share custody of the subwoofer between the two.

I've always liked Harman Kardon for their design. It also seems relatively well regarded with the audiocrowd. As a future investment, i'm considering their 7.1 amp, the AVR 520. It will replace my ...