I have a venerable Hafler kit amp (DH101) that is, yeah, well, venerable (like me). I'm thinking that I could use it to drive my Wharfedale 8.3 floorstanders for 2 channel use while letting the 1070 drive my little Mirage Omnisats for surround purposes with movies. I may not keep it that way but I was wondering if I could drive the Hafler with the pre-outs and somehow temporarily tell the 1070 to deactivate the L/R front channels. I'm probably just dense but I couldn't figure out how to turn the internal amp off temporarily.

Any suggestions are much appreciated.