Here is a nifty gadget that turns your old HiFi equipment smart. The Eve Play can stream music to amplifiers, speakers, or soundbars via AirPlay. It has a digital to analog converter with 112db signal to noise ratio. You can use it to group your AirPlay speakers into a multi-room system.
Eve Play works over 2.4 and 5GHz WiFi. It lets you easily choose between RCA, optical and coaxial connections. You can set everything up with the Eve app or Apple Home. The integrated Ethernet port ensures stable streaming. Once connected to your phone, simply go to Control Center, tap on AirPlay and select Eve Play to get started.[where to get it] [official site]