I strongly recommend skipping the preamp and putting your money into a streamer DAC. Does the Auralic play well with Roon?
I am a huge fan of the Grimm MU1 streamer which also works as your Roon core. The Grimm MU2 came out and you can find good deals on the MU1 as people upgrade. It has a very loyal customer base.
Get a DAC with volume control. One of my favorites is the DAVE. DAVE is gettng kindof long of tooth but still performs excellently and has an excellent volume control. It takes the AES input which is the only option with Grimm.
Alternatively, I like Lampizator tube amps. I have a GG3 with engine 11. You can find a Big 7 or other DHT based Lampis well within your price range if you don't buy a pre. Volume control if optional on the Lampizator so get one that has VC. Most lampis also have one analog in so using it as your volume control you have an option to run an analog signal thought it if you have another analoge source. I like the single ended and find no need to go balanced for a DAC. This saves 50% on sets of output tubes which is nice when you tube roll.
Finally, I'd say Preamps in the price range you listed are going to be well below the quality of your other components. If you must have a pre, consider Apollo Audio systems or Aric Audio. the latter has become popular and is more expensive. the first is not so discovered yet.
Jerry