This surface coating, very "à la mode" in the nineties, always turn into a sticky mess. I won't hesitate to call this one of the major industrial fails of that era! Now, I can't answer on large surfaces even more if yo can't take appart the part, but I've stripped it of a Beosound 3 wall mount, leaving it satin black where it was before velvet mat black. If I remember well I did this rubbing the coating with warm water. They are various articles on the web about coating again the part with "Plastic-dip' paint. Often Beosound 4 and Beolab 3. Luckily the back of my Beocenter 6 doesn't show any sign of stickiness but I'm afraid it won't last forever.  

I appreciate the reply. At the moment they're still in good enough condition. I just wanted to potentially get ahead of them. Maybe I'll just wait until they get really gross and throw caution to the wind.

I once removed the stickiness from most of the interior and centre console of a Mk4 VW Golf - that was mostly plastic underneath. I remember using IPA and finding quite a few advice videos on the subject, such as this one: 

Location: Warwickshire, UK

My B&O Icons:

BeoCenter-9500.png

Beoremote-Beo4.png

Beovision-10.png

Beotime.png

Beosound.png

Beosound-Explore.png

Beosound-Essence.png

Beoplay-P2.png

Beoplay-M3.png

Beoplay-H4.png

Beoplay-H3.png

Beoplay-Form-2i.png

Beoplay-Earset.png

Beoplay-A2.png