Does the streamer effect sound quality

Absolutely does! I upgraded from a Bluesound Node to an Aurender N10. I originally thought the Bluesound Node was very good, but the Aurender N10 is night and day better. Probably the best upgrade in my 55 years of being an Audiophile! Check out my Audiogon post on this subject: https://forum.audiogon.com/discussions/streamer-upgrade-bluesound-node-to-aurender-n10

@mgattmch 

+1

Absolutely.

If you are using the DACs in the streamers, the sound will vary more between them than if you are using the digital outputs only.

Do streamers matter? Yes absolutely they matter.
But…in my opinion a move from the Bluesound to Cambridge is not much if an upgrade. Going from Bluesound to something like a Lumin U1 Mini or U2 Mini will be a bigger step up. You can find a used U1 Mini with an SBooster power supply upgrade. That would be nice. Don’t waste time and money on lateral moves like the bluesound to Cambridge.

Everything can make a difference.  Each case is different even with different protocols or inputs on each streamer.  Only way to know, in lieu of detailed technical reviews, is to try.  Many people report improvements moving off Bluesound.  I’ve been streaming for years and currently run Cambridge streamers which I think offer very good sound quality and  value.