Aurender A15 is $8K and has a preamp, the app is stable and sounds great, it also can be used as a streamer/server as it has USB output
Holo Audio May 'Kitsune' DAC with the companion Red DDC/streamer is $7K and is an even more flexible option as you can choose from many compatible apps
Lumin P1 at $10K is above your budget BUT it might be worth the stretch as it has even more/better features, for example the preamp function is truly 1st rate and the fiber optic input makes a noticeable difference - the P1 is what I use in my main system
Or you could blow your budget up completely and go for an MSB Discrete with renderer/streamer module for $14K and has a fantastic upgrade path, most importantly it is the best of the bunch sonically given your stated sonic preferences