There is an app known as Mconnnect Control. Paul recommended it to me and it works with Qobuz, Tidal and Spotify. It can be installed on an iPad or iPhone. It recognizes the Bridge II and lets you stream at all available sampling frequencies. Searching is less sophisticated than Roon or others, but it works well. Note that there are several versions, One is called Connect Player and the other I Connect Player Light (which is free). Do not use those. Use only the Mconnect Control. I use it frequently when I want to stream to the Bridge II directly.
Quobuz - does anyone know if Quobuz will be adding DLNA as Streaming Protocol?
I'd like to stream music on Quobuz to my PS Audio dac using the network bridge, but I can only do it using usb. Since getting the Uptone Audio EtherREGEN it's the only way I want to listen because it sounds so much better than usb input.