cinema sound sofa

Not likely, no. Sonos both doesn’t generate Bluetooth, and most devices that do (some TVs, mobile devices, etc) only generate a single stream, so you’d be able to either pair your Sonos (stereo only) or your sofa, not both at the same time. 

I thought that. Thank you 

Having already deflated your idea, I wanted to throw an extra monkey wrench in the works…Sonos can only take (at least to my knowledge) a stereo Bluetooth connection, so any 5.1 Bluetooth connection won’t even ‘connect’ to a Sonos. The only way to get a 5.1 (or greater) signal into a Sonos is via a digital (optical or ARC/eARC) connection. 
 

Now I’m off to look up why it’s called a monkey wrench…

For those interested, this from Wikipedia:

The largely US idiom "to throw a monkey wrench into (something)" means to sabotage something, equivalent to the British English "to throw a spanner in the works".

🤣🤣🤣a normal sofa it is then😒

🤣🤣🤣thanks