Streaming for beginner


I have a PS Audio front end-- DMP disc player and DirectSteam DAC. Very happy with the resolution and performance, especially from my redbook cd collection. For those familiar with the DSD, it is upgradable via a network bridge card to become a dedicated streamer. When I bought this DAC, I was looking ahead to an eventual migration to streaming.
I also have a Spotify account, that currently only serves me as a companion to my iPhone during walks and exercise.

My question: assume my goal is to stream for convenience, simplicity, and achieve audio quality that equals or surpasses that of redbook cd’s. I am not looking to purchase music or download it for storage. What am I missing? I also have a dedicated iPad that can serve as the interface to the DAC/Streamer. Spotify also claims that streaming in high resolution is available on my account. Do I need anything else? Am I oversimplifying this?

I am a beginner when it comes to streaming, so please answer in simple terms since I will not be familiar with a lot of the services and components mentioned elsewhere in these forums. In fact, confusing enough for me that it is forcing me to ask here.


mbiondo
cleeds—Thanks for the reference. That's relatively new data; I hadn't seen it before. No time to review now, but will get to it soon.

Previous blind studies (all relatively old) had always indicated no statistically valid distinction between redbook and higher rez. And the general consensus is that redbook has only improved in the recent decade, as DACs have progressed. It may be (?) that rebook represents the point of perception, so that aural judgement is in a sort of "knife's edge" balance at that point.
Amazon also offer HiRes streaming
But audiophile quality (non Amazon) device support is limited
Here we have strange talk , OP is concerned about quality streaming and cd , but the question is did he pulled out all best out of cd ????? .
In my case I got vault2 recommend by this forum and I’m happy I’ve tried most major services ended up with Qobuz, and I would never compare Qobuz  to Spotify. And I’m not using vault dac I’m using outboard dac and sound is I would say similar to cd . Ofcours I know I didn’t get best out of cd , because I need better player and follow better streamer and better dac to get best out of digital world 🙂
For those who listen primarily to classical music,curation is a problem.  Spotify is really useless, Qobuz & Tidal not much better.  You should look at Idagio and Primephonic if your tastes go this way.  Primephonic has hi-res, Idagio has only redbook.  Both make it so so much easier to find stuff, to hear new stuff, etc.  I have an Innuos Zenith Mk 2 to an Auralic Vega dac.  I’m thrilled except that I don’t like the interfaces available for lms.  Ipeng, ugh.  I prefer the web interface, port 9000 ay myinnuous.com.  Innuous, if your reading this, please fix it!