Act as a pre-amp? Yes. Turn off the internal LCR amps? No. In order to turn off the LCR internal amps you'll have to set AMP ASSIGN = Custom and then set LCR to "None" as noted in the chart at the bottom of post #2.Thanks. So in this case the Denon Amp will still act as pre-amp(turn off amp section) for the three channels and leave it to external amp?