Hi, all! I'm here partly to get input (no pun intended...) on a new preamp. Also, simply as I get the sneaking suspicion that as I drone on about stereo gear and my 'challenges' with my system, my wife's 'mm-hmms' and 'yeps' may not be entirely authentic

My Rotel RC-1572mkii went volume crazy the other day and quickly raised itself to max with no input from any remotes, apps, or anything else. I'm lucky my speakers (too expensive for me to replace!) were okay. Now I don't trust the Rotel, especially since I've found others on forums who had similar experiences with a Rotel preamp.
So, I'm in the hunt for a new preamp. I already have a
Wiim Pro Plus (use just for streaming). I would like to be able to input my cd player (via rca or coax), Wiim Pro Plus (via optical ideally, or rca less ideally), computer (via USB), and turntable (have phono preamp; both it and turntable are unbalanced). I want a decent volume control knob and digital volume display on the preamp. I am also interested in high-pass filtering my main speakers (pair of Paradigm Founder 80f) to step beyond just the LPF built into the sub (SVS PC-2000 Pro). I don't know that high-passing will make much (or any?) difference, but I'm curious about and interested in it. I currently have Sonarworks SoundID Reference for room correction via my PC so the turntable (which isn't running through the pc of course) doesn't have any room correction. The SoundID provides some noticeable but not dramatic room correction. I have an Audiophonics 2-channel power amp with balanced inputs (I used to run balanced out from the Rotel). Ideally, I would like to stay with a balanced out from the new preamp to the power amp (though again, I doubt this will make a significant difference, maybe not even noticeable??). My system is in our living room, but it's open to the entire first floor, so we're talking 7000+ cubic feet, but the space fills with sound pretty easily (for better and worse; wood floors and lots of windows). Room correction-wise, the target is mainly for the couch in front of the system. If we're in the kitchen, the sounds does what it will and we live with it!
I've been looking pretty hard at the
MiniDSP Flex and SHD with Dirac (to use instead of the SoundID Reference). Regarding the SHD, I'm curious how its app-based user interface (Volumio??) compares to Wiim's. The WiiM app seems very well thought out and keeps getting features added. I like the Flex's price, but the SHD's combination of both balanced and SE outputs is tempting. I was down the RME ADI 2 DAC FS rabbit hole for a while, but as it doesn't have analog out or proper bass management, as cool as I think it is, it seems like not the right fit. (Also, I already have a nice standalone headphone amp.) I'm also curious about the
Schiit Kara, but I'm torn about no volume display and a power switch on the back rather than front. Also have looked at the
Emotiva BasX PT2. It has HPF and LPF knobs on the back and enough inputs/outputs except no balanced output. I don't know Emotiva well enough to gauge if its great price for the preamp is really great, or if there are shortcuts being taken to price it at that. Between the MiniDSP Flex and SHD, and the Emotiva, will the DACs be equivalent from a real life hearing perspective? I'm also curious about the
K11 R2R as an external DAC, mainly just as it seems like an inexpensive way to explore R2R DACs. Thanks for any and all thoughts, considerations, and recommendations!