The R-N303 is entry level. No balance control, power spec is a joke, etc. Look at the R-N602...much beefier, full features (including variable loudness, balance, B&T) and uses their ToPART concept. Sells for $599.95. The $749.95 R-N803 adds their Room EQ concept, YPAO. I'd normally skip that, except for one thing, it automates the variable loudness and incorportes the room EQ measurement into the algorithm, so like Dolby Volume (never found on a stereo), it works better than any conventional loudness, even their own. So if this rig is often going to be used at levels below "reference", that could be a winning feature.
Budget streaming amp
This subject has probably been beaten to death... I will keep this very simple - I have a pair of passive bookshelf speakers and a room. What do you like/hate/love about of these 5 options? What other options should be considered?
Sonos Connect Amp $200 (eBay used)
Yamaha R-N303 $300
Sonos Amp $649
Bluesound Powernode 2i $900
NAD C368 w/blueos $1400
I feel like $200 Sonos is the easy answer.