So here's my set-up: Parasound P5 pre-amplifier > power amplifier > passive bookshelf speakers I want to stream Apple Music from my iPhone (IOS10) to these speakers. The P5 pre-amplifier has an optical input, which I'd want to use to get the best quality. I obviously do not want to purchase another pair of speakers (like Sonos.) Does the AirPort Express work here, if I connect an optical cable between it and my pre-amplifier. Does it show up as a selectable output in the Apple Music app in IOS10? What other options do I have for high-quality streaming? I'd rather keep the cost as low as possible as buying the AirPort Express @ $100 is a bit out of my budget just to use for this purpose. Chromecast Audio would be an awesome option but unfortunately, it is not compatible with the Apple Music app on the iPhone. Any solutions and links to products would be appreciated.