I use an Auralic Vega DAC instead of the internal DACs in my Oppo 203 and Blue Sound Node 2. I’m very happy with the sound quality. I think it’s very close to being on par with my Marantz KI-Pearl CD Player.
Will the difference you experience be night and day? Probably not. Will the investment be worth the difference in sound quality? Only you can make that call.
Can you get a loaner from the dealer and compare so that you can decide for yourself whether it’s a worthwhile investment?