Hi,
Here is what I have and my goal.
In the basement system running a Salk Stream player III SE acting as a ROON core.
On main floor I have AGD Alto MK II pre-amp connected to AGD Audion MK III amps via XLR to Revel F208 speakers and via LFE to dual Rythmik e15HP2 subs. TV also connected to pre-amp.
I need:
- room correction
- bass integration/management
- tone controls would be nice
- ROON end point to hook up with the ROON core in the basement that can work with AGD preamp.
I am thoroughly confused as to which device to accomplish these tasks, while maintaining low noise signal purity of the existing devices.
I am not a technophile, so appreciate your 8th grade level explanation.
Thank you so much for your help 
Roon does all the DSP on the server, so it doesn’t really matter much what the endpoint is for DSP purposes.
It seems that your preamp does bass management internally, but their site is showing something with an entirely different rear panel as "Alto MKII? so its hard to say. If yours does have all of these digital inputs, then any streamer with a digital output should work. Depending on how much you want to spend on it, and how nice you want it to look, anything from a RaspberryPi or an old laptop with a USB port, to a dedicated streamer (Rose, Lumin, Holo, there are tons of them) would work.
For all practical purposes, a Wiim would work as well as anything else and cost very little, but you may want to get something else for esthetic purposes.
Does DSP = Room correction?
Is there a mic involved with devices you mentioned to measure in room response for Roon DSP and room correction and bass integration?
If I appear thoroughly confused by my question, I suppose I am and appreciate your help.
Thanks
Room correction is one of the uses for Roon’s DSP engine (“MUSE”).
Roon itself doesn’t provide any means of creating room correction settings (maybe it should, but it doesn’t) so you would need to get a calibrated microphone and generate them yourself. Options, again, range from doing it all by hand using a microphone and REW software, which might be a bit too much work, to using an iPad/iPhone with a very reasonably priced HouseCurve software (discussed somewhere here at length) to rather expensive but more powerfull/flexible packages. I, personally, use Focus Fidelity software and like it, but there are many other options. There are even services that wilkl take your in-room measurements and create room correction settings for you.
As an option, there are some streamers that have built-in room correction (i.e. EverSolo DMP-Ax series, or Wiim have it built-in, and the generation process is quite similar to what you would do with a modern home theater setup – plug in the microphone, push a few buttons, and everything is done for you. BlueSound is promising that some of the newer Node streamers will get Dirac built-in, but it isn’t yet available outside of a few pricier NAD boxes.
Having an endpoint with built-in room correction is probably the easiest, and works for anything that endpoint can play, not just Roon. But then if you decide to replace that endpoint you need to redo the room correction setup. If Roon is your primary source, and/or you have more than one endpoint, getting your own microphone and somethying to generate corrections to apply centrally in Roon might be both the cheapest and most flexible approach long-term.
For a microphone, you can use MiniDSP’s UMIK-1 which is quite inexpensive but accurate, small, and easy to use.
Hope this helps.
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Before you go whole hog on DSP hardware let me suggest Housecurve. All you need is a phone and the software and you can generate convolution correction files that will work in Roon. It’s an inexpensive first step and if you like the results but want more you can consider the more expensive hardware options later.
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Also, you might want to follow this thread. It concerns Roon endpoints with Dirac.
Nice to see someone else here using a Salkstream! 
Mine is the Salkstream III.
