From the Denon website.DRA-685
AM/FM/FM Stereo Receiver • 100 + 100 watts RMS, 20Hz-20kHz >.05% THD • Record output selector • Pre-out and main-in jacks •

As suggested the best way to hook up EP500 would be to use the preouts from the preamp section of the reciever using some Y connectors.This way you still have use of the main volume on the reciever for the sub.

Rick


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