Yes there is still a problem, the receivers outputs will load each other with the same low impedance load, whether they are on or off. Not good. Your cheapest solution is the switch box, the most seamless solution is a buffer amp. ATI have one that can be configured as I outlined. Mark (TLS) if Kurt were to use the L&R sub line level inputs with each receiver respectively, would this be an equivalent to using a dual input buffered amp? :confused: Just thought I would ask. :) Jeff