I just acquired a Yamaha MX 830 amp, I would like to use this amp for my front channels on my hometheater setup. When I hook it up to the V663 Preout fronts, I get no output(using basic RCA cables). I checked both manuals and the v663 preout rated output voltage/output impedance is 1.0V/1.2k ohms. The MX 830 amp input sensitivity/input impedance is 1.32V/60 k-ohms. How can I make this work?