getting into streaming

@gwng8 

You are me a couple of years ago. There are a lot of good info from the answers above but there are a couple of things that you need to understand:

1- The concept of a controller is different from what we were used to. Everything today is done in software. The only hardware you need is an iPad. You phone by the way won’t cut it (too small). 
2- The iPad will control 90% of your hardware, including servers, DAC, pre-amp, AVR etc. You just need to download the proper apps from the App Store. 
3- The apps don’t have to be matched to the hardware necessarily. For instance I control my server and my DAC with the LUMIN app but neither one of them is from LUMIN. You can do the same with Roon. 
4- Lastly, all of your hardware have to be connected to the same network, most likely your wi-fi home network. If your equipment is not connected, all bets are off. 

Just use a laptop, they work well for those new to streaming. I guess that only applies if you can use USB though. I started with a tablet and audioquest dragonfly.  They sounded great and represent a minimal investment 

Have a home wifi network, with a computer on it? A device like a Denon HEOS2 receives streams via wifi and outputs them via TosLink or USB, which you can feed into your Accuphase. Use an Android app like BubbleUPnP to control things.

If I read the OP's original post correctly, they asked if anyone could recommend a streamer device that came with its own dedicated controller.  No one seems to have answered that.  Unfortunately, I don't know the answer.  I know they existed for personal servers before there were streaming services, like the Squeezebox devices & Audirvana.

Does anyone know of any contemporary streamers that include a physical controller, access to multiple streaming services, and (possibly) a server or NAS (although I'm guessing that the OP will continue to play their CDs)?

While i have a love/hate relationship with Roon, i too think its a prime candidate for you.  You could also look at the open source KODI.  Both are software and must be run on either a regular laptop/desktop, or on a dedicated server.  Both are controlled by available remotes that are apps on phones/tablets.  Both can play local files (ripped CDs) and connect to streaming services. Note that streaming services, while great, vary greatly in quality.

Int he past i have written many pages on the dos-donts of streaming.  Streaming can be superior to CDs but it takes some doing to get it right (true with any digital). Note that once you introduce a noisy computer into the chain tho, isolating the audio chain from that (electronic and ground) noise becomes both more important and more difficult.  But its not rocket science - only the regular kind :-)

As a first step, you can use itunes + a $10 utility called bitperfect (on macs). There are several cheap/free programs for windows and Linux, but take more rolling of your own.  WMP/Windows has a bunch of issues - not fatal, but issues.  For one, its harder to keep things bitperfect.  For two until recently WIN did not support the latest USB high res spec. And USB, done right, is the best transfer method to a DAC.  Many will argue. They are not engineers familiar with the topic. Yes, its one of those places where you need to isolate noise very, very carefully.(see above).

I would NEVER go back now that i've gone to the dark side. The endless catalog, the convenience, the readily available re-masters are addicting!

Hear the sirens :-)