I would suggest a rpi 4 running Ropieee XL for the operating system (~$75 including power supply, passive heat sink case and 32 MB microSD card) feeding a Topping D10s DAC ($99). All available on Amazon. Google search for RoPieee for instructions on how to flash the operating system to the microSD card. Works with Roon (either WiFi or Ethernet) or iPhone music apps (Tidal, Amazon HD, etc) via AirPlay 2. Sound quality of the Topping D10s DAC is likely better than your integrated DAC if it is more than 3 to 5 years old. And put the extra $800 in the bank.