The Bluesound will give you a lot more options for streaming - Qobuz, Tidal, Radio Paradise, and much more.
Connecting to an external DAC will improve sound quality, but the DAC in the Bluesound is quite good for the price.
You should notice a difference in sound quality running the Bluesound and external DAC through your Parasound gear over using the amp/DAC in your Marantz receiver.
The Bluesound app is very good and makes it easy to use your phone to select music from either your NAS or from streaming services.
Connecting to an external DAC will improve sound quality, but the DAC in the Bluesound is quite good for the price.
You should notice a difference in sound quality running the Bluesound and external DAC through your Parasound gear over using the amp/DAC in your Marantz receiver.
The Bluesound app is very good and makes it easy to use your phone to select music from either your NAS or from streaming services.