The best solution to your problem?  Wires. Sorry to be so didactic.  But you are about to pay an electrician to pull high-voltage AC wires to the hidden floor outlet or whatever, just to power your self-amplified speakers.  OK, ask them to pull a low voltage cable (Powerlink multi-conductor) to the same place!  Very low additional cost.  Or you're about to run a power cord from your speakers to a convenient wall box. Run the Powerlink cable using well-known, time-honored methods for traversing the perimeter of a room, to the same spot, on the floor underneath the AC wall box, and add a cable sheath to hold both, running from the wall to your speaker. (This advice is just saving you the trouble of posting in another couple months, "My WiSA connection keeps acting up and my speakers are offline"...:-)

Thank you trackbeo for your advice and honesty. So my best bet is a beosound core linked by wire to the Beolab 17. How about the beolab 19? Same thing? Last question… did you think it will be any delay between the sound stream to my beoplay a9 wireless by the beosound core and the wired stream to beolab 17? Thanks all again for your highlights

quick question - why would you need to stream from a Core to the A9? I dont even think the Core even can connect to an A9.    

Hi Sandy, I am not an audiophile for sure, and I like a wide soundstage. My new living room will be more than 60 sqm in a rectangle shape and I want to fill the opposite wall with a speaker. Furthermore I don’t want to get rid of my beoplay a9…

Wait a minute… ….the Core and the A9 can both be part of a B&O multiroom setup - of course the Core also need the speakers. If one wants to stream from external to these devices, it is possible via Airplay 2 or Chromecast (depending on ones priorities) - e.g. for Tidal and Apple Music. The B&O devices also support Tidal Connect with the recent update. You can use B&O Radio and the built-in sources on both and let the second join the first, if you have already started playback.   The big question here is how to make the cable management, if you prefer the physical connection. Since there is no PL-out in the 19 and only one PL-out in the Core, you will have to use a splitter (and do the bas management via the controls on the BL19). All doable, but needs to be well planned. Sure, the easier way would be to go wireless/WiSA. However you will then need a Transmitter 1 /api/files/540f83214a5a4255867316927a3e561f And - as mentioned - WiSA is not everywhere the optimal solution. I know of no B&O device - apart from the Beovisions/BS Theatre - that has WiSA built-in……stay away from the BS Moment, please. It should be possible to use the Ever Solo as a player for the BL17/19-Transmitter combo - toslink out and toslink in. But you will not be able to stream from the Solo to the A9. You can stream from extern (via a mobile device) using Airplay2 or Tidal Connect to either one or to both. I am not sure how the volume control on the Ever Solo using toslink out will work??? Using the BS Core it is much easier, when it comes to volume control….just use the B&O app and/or the Beoremote One. Hope this helps a bit. MM

I'd check Steve (from sounds heavenly) video on YT about the 17s and connection options. Hint, if you use optical you need a streamer with a volume controlled optical output - you'll need to check whether there Eversolo does. https://www.youtube.com/watch?v=_DNWuqqreP8    

Alternatively you can use the analog-out and connect that to the analog-in on the Transmitter. MM

Many thanks for all your highlights!! If I sum up your recommandations: Eversolo A6 —toslink— beotransmitter 1—powerlink—beolab 17/19. And maybe Beoplay A9 (I found this type of cable which I need to add an adapter to go to toslink) https://www.ebay.co.uk/itm/155146980391?var=0&mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338268676&toolid=10044&customid=CjwKCAjwseSoBhBXEiwA9iZtxgc7RXDkiTVEgC_6XovcgKGZvvE-8SiLuOclwJXmcOVcZcG5SIl6rxoC1N8QAvD_BwE) Am I right? if yes, can I see all my setup through my B&O app on my phone?  

Is there not just a much easier solution? If you want music to a pair of 17s and a 19 sub, you need a streaming DAC (in the category that the Eversolo exists in) with not only analogue RCA outputs, but also an analogue sub output.     I don't think the Eversolo has a sub output. Something like the Blusound Node does have both outputs you need though. Connect a Node to the 17s and 19 (both of which have analogue RCA inputs), and you have your 17s/19 music system. As for controlling your music (selecting albums, what to play etc), you'd be using the Tidal or Apple Music app anyway, and you'll also be able to select the A9 as well.   (the Node doesn't have Chromecast built in, in case that matters to you).