Russound BGK1 iBridge Dock Kit
It works very well with my system.  Downside.  The downloadable app is basic and archaic.  You don't get smooth easy control of your device on app.  Nothing else negative to report.  I already had experience with the app before i purchased the bridge kit so I knew what to expect.  I would recommend purchasing this kit if you have the Russound equipment to go with it.  Works flawlessly.  (Purchase the adapters at the apple store for your I phone 5.  Works great)