Digital streaming options for my system are confusing


I appreciate your advise in advance as I am more of a old school vinyl/cd guy. I have a McIntosh MAC6700 integrated receiver. It has a DAC but tech in this area is evolving at such a rapid rate that I am confused as the best way to access a high audio quality streaming/digital playback source. I have heard hi end streaming services (Tidal?) are great but my Amp does not have a direct iPhone/iPad connector. What is the best way to go that will keep my system simple and easy for the whole family to access? 
telemarcer
Go for it!
You will find that the Bluos app you use on your iPhone to control any Bluesound product is a first rate piece of work. It is extremely powerful and both it and the Bluesound operating systems receive constant updates over the internet.
And unlike some updates I have yet to experience one that was a backwards step.
Good luck and enjoy!
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Thanks for all the feedback. So leaning to the Node2i via an optical to my receiver. Wireless will allow everyone who has my wireless password and streaming can play yes? I however can stream/buy high quality audio files if I choose?
Note: you will lose MQA decoding using your built in dac.  So, use both connections as I posted earlier.  
You can also play via Bluetooth from your phone.