I’d highly recommend a used Innuos Zenith Mk3 or Zen Mk3 (new or used) streamer/servers that have their own onboard disk drive along with internal storage — everything in one box. Good user interface, excellent sound quality, and great customer support if needed. You also have the option of adding their Phoenix Reclocker down the road for a nice performance boost if desired. There’s a Zenith available here now in your price range. Best of luck.
https://www.audiogon.com/listings/lisb1762-krell-k300i-integrated-amplifier-with-dac-solid-state