@robshaw Goodonya for keeping an open mind on this, and you’ll be richly rewarded for any effort you make toward getting a separate streamer. BTW, totally agree with you on Qobuz, and I prefer the Amazon interface too but not at the expense of sound quality. Also, great choice on the Fritz speakers and not surprised you’re very impressed with them (maybe @erik_squires was the helpful member who recommended them?).
So, to answer your questions, I run Qobuz on my iPad/iPhone wirelessly through my iFi Zen Stream streamer. The Zen Stream doesn’t link directly to Qobuz (yet) so I spent $6 on an MConnectHD app that has an interface somewhat similar to the Qobuz site. The streamer can work over Wi-Fi, but it has issues with that so I’m going to use an Ethernet cable to get around that and will likely sound better as well. Since my router isn’t near my stereo I’m gonna use a TP-Link Wi-Fi extender (that plugs into an outlet) and run an Ethernet cable from that to my streamer. Then you just use whatever digital connection that works from the streamer to your DAC and you’re all set. Sorry for the long-winded reply but hope it helps.