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—I'm not personally aware of any other evidence of controlled double-blind testing that indicates a statistically valid audible distinction between redbook and higher rez alternatives. That's why I was interested to see your reference, although disappointed with the result.

As previously noted, all prior evidence (from controlled blind testing) 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.

As for "appreciable", hey, that word isn't a subjective term. It simply implies obvious, or readily capable of being perceived; i.e., hi-rez presents no readily apparent (no "appreciable") advantage. That's what the available evidence indicates. Personal exceptions are inevitable; some might be valid, others might be the outcome preconceived bias.
Hi mbiondo...

Just a reminder for Folks, TIDAL has a military discount for top tier streaming at $11.99USD per month with potential to 24/96 lossless.  Tried Qobuz and Prime...settled on TIDAL.  More Peace, Pin. 
If you have Amazon Prime then Amazon HD music is the way to go for $13.00 a month. I took the HD-Audio Challenge II from Dr Mark Waldrep, and it was hard to differentiate 16/44.1 from 24/96. I was mostly guessing.
I think I am less knowledgeable than many beginners on streaming and downloads. Hoping I made a good choice I bought a Bluesound Vault 2i and ripped about 170 CDs, all of my CD collection. With customer service help I made three spare copies of what the Vault had ripped using multiple passes and metadata on each CD to eliminate the vast majority of bit errors and cover art it took from the internet: two on USB drives - my entire library is only 31 MB on 60 GB flash drives, and a copy I could rearrange in my laptop to index my library by composer; something it would require a cerebral cortex the size of a watermelon to do in the Vault's hard drive of two Terra Bytes. If I need more storage for downloads I add I could put it on a 120 GB flash drive but I doubt I will collect that much more in downloads. I listen to my library through a flash drive I plug into the back of my Vault which is connected to a vintage turn-of-the century MSB Platinum with upgrades. The electronics following are vacuum tube electronics I designed and built myself so I could have things I wanted such as polypropylene power supply filter capacitors in the 1000 Volts I use in the final stage of amplification.  
What I get from the answers to the original question in this thread is there are no free high resolution services even though the Vault has a long list of streaming services and because I have no faith in my economic future, I do not want to be tied to paying for a subscription  so I just purchase downloads in higher resolution than CD. If I am wrong and there is a free service as good as high resolution downloads let me know because I an just a beginner at this.
Thank you in advance.
You have very high end gear to play from CD.  It will be difficult but not necessarily impossible to get close.
The devil is in the details.  Very clean power for everything.  Lots of good LPS, lots of choices.  My current favorite for the price is the Farad3.
In my system I started with an EtherRegen and it was good with LPS1.2 for power.  I added a SOtM sNH 10G with clock and Farad3 for power. Then the icing on the cake was adding an EE Switch8 powered by an Uptone JS2.  Sounds crazy but it keeps getting better.  Then I turned the EtherRegen around and added Fiber to the EtherRegen and SOtM and that was like adding Frosting to the icing.
Also big improvement with the 2 dcbl CAT7 cables and a dcbl CAT6 cable from SOtM.
I found removing all the SMPS was helpful.  I changed SMPS for my REL Longbow's from stock to IFI and it destroyed the sound of my system.  The IFI may have cleaner power output but they added a lot of noise to the rest of the system.  I had to move them off the dedicated lines for the rest of my audio gear.
Roon was another plus for its integration with Tidal and Qobuz and using the DSP, but having the Core on a quiet computer is important and a good streamer counts.  I have an Innuos Statement which is very quiet with its crazy power supply.  I can hear a difference between locally stored files and hi-rez on Tidal and Qobuz and it is bigger than the difference between Tidal and Qobuz.  Tidal is a bit more lively and Qobuz is smoother and a bit more relaxing. 
But at the end of the day it all sounds good and it gets nit picky only when comparing the sources.
Listening to Roon Radio  playing Rod Stewart Mandolin Wind 16/44 on Qobuz now and it sounds wonderful.