Connection from iMac to Zeppelin 2

I need a connection from the iMac via an Iphone 6 to a B&W Zeppelin 2. I want to access my music DB with Audirvana.
Mac and iPhone are integrated in the same WiFi network. But it doesn’t appear in the Audirvana selection. App is installed on both sides. I didn’t really want a cable connection. (via headphones from iMac). I’m afraid it won’t work, can it?

Thank you already.

No, but since you’re on the Mac, you can play to it using the AirPlay.