The Meguirars is quite good. Pledge, which I also use on my racing car, is easiest. Pure carnuba airplane wax if your speakers are exposed to UV light from a window. Zaino wax gives the deepest breathtaking 3D liquid-like gloss I have ever seen, but takes a great deal of time to apply to a vehicle. It might be worth it for furniture having a smaller size as you mention.
What do you use to keep high gloss speakers clean?
Curious what products members are using to keep their high gloss cabinets clean? I’ve been using Meguiars Ultimate Quik Detialer. This stuff is absolutely amazing. zero streaks or residue, wipe it on and done!