I have a few options for controlling my system:
Mac mini - Amarra Luxe and sQ+, Audirvana +, and HQPlayer for library play. Deezer desktop app for streaming. 2 DACs connected via USB ports, HDMI out to TV.
Pixel 2 & HP Chromebook - HQPDcontrol app for controlling HQPlayer.
iPad Air & iPhone 6 - Amarra Play app for controlling Amarra Luxe and sQ+, A+ Remote app for controlling Audirvana +.
Chromcast Audio - casting mainly from the Chromebook.
Mac mini <USB> Bel Canto mLink <BNC> MHDT Lab Pagoda > Decware SE84UFO > Omega Super 3i and DeepHemp 8, or
Mac mini <USB> dB Audio Labs Tranquility > amp > speakers, or
Chromecast Audio <Toslink> MHDT Lab Pagoda > amp > speakers