Recommended products for polishing Focal speakers

I had some focal utopia speakers that had a black gloss finish and they had some swirl marks.  I would only use a very fine microfiber cloth that is used for eye glasses.  I believe some of the higher end auto polishes that have some anti swirl properties would help.  ("autogeek") is a site I use.  You won't be able to remove the scratches if they are deep but you may be able to mask the swirls.  Nothing abrasive should be used or you could make it worse.  Just my two cents.

I’d suggest you contact customer service. Normally I’d say an automotive light polishing compound will work. Even then I’d try it in an inconspicuous place to make sure it works alright.

Then to maintain, I’d use a very soft brush IE California duster or paint brush to remove the dust. Otherwise, DO NOT touch the surface any more than absolutely necessary. Microfiber still causes swirl marks which is why I use a blower to dry my car after washing

I use piano polish. It comes with a pre-cleaning bottle, and then the polish. Works great. Cory Super High Gloss piano polish is it's name.

Most scratches unless really severe are in the clearcoat or very top layer if just paint and should generally come out with a light buffing using the above mentioned products. Ask a car restoration expert or contact the manufacturer and ask about the final finish. It may be several coats thick and buffing will remove the scratch and bring out the underlying paint color,....Presto!

"...I’d suggest you contact customer service..."

Yes, this. I have dulled some black gloss paints and not had a fine enough product to get the sheen back..