my receiver (HK 630) allows me to use the surround back channels as a second set of powered outputs for a multi-room setup. Is it better to buy a load of cheap speaker cable and run it into the second zone or should I use the cheap spare receiver I have lying about to amplify the sound in the second room and run long phono cables from the pre-outs on the main receiver? Sound quality isn't much of an issue in the second zone. It's only really for listening to NPR while cleaning the apartment. Also the distance between the two zones is quite short as they are adjacent rooms in a small one bedroom apartment.