teenage engineering hacks its own IKEA collection and you can do it too
Ikea Symfonisk Amp Modification Guide - A much cheaper Sonos Amp
Using Ikea Guts To Add Sonos Compatibility To A Vintage Speaker | Hackaday
Hacking the Sonos Ikea Symfonisk Into a High Quality Speaker Amp - Make:
Ikea's modular lights and speakers get 3D-printed accessories
Hacking the Sonos Ikea Symfonisk Into a High Quality Speaker Amp (By Ben Hobby) | Audio Science Review (ASR) Forum
Ikea hack complete. Now to do the other side for a stereo pair. The speakers are KEF cresta bookshelf which have the capability to be bi-amped👌 : r/sonos