The LS50's are a little large, but the others I would consider semi-portable. Look at the below image, the Reactor is the size of a small toaster and you just need to plug in a power cord. You could easily move that to different rooms, plug it in on the terrace, bring it to a friend's house, etc. If that's not at least semi-portable, I don't know what is.

https://i.imgur.com/V1fEu7h.jpg

https://i.imgur.com/7dSAtEY.jpg