Beolabs are powered (active) speakers, they take a line-level input, not an amplified one.  Therefore, you need a Port, not an Amp.  They also have RCA inputs, so all you need are 2 proper length RCA to RCA shielded cables, a single cable for each speaker.  Connect these to the L/R RCA Outs on the Port, and connect them to the proper RCA In on each speaker.  Set the input switch on the Beolabs to ‘Line” and you are good to go. 

Warning!  Before connecting the Beolabs, make sure you set up the Port in the Sonos app, change the volume control on the Port to ‘Variable”, and lower the volume on the Port.  Don’t want to destroy the speakers on your first use.

Great, thanks for feedback, this is very much appreciated.
I will do some more research, but yes, Port seems to be the way to go.

Thanks!