My EP 800 V3s have silver plate amps with a 'EP800' logo on a separate sticker above it that is stuck to the Rosewood.
My woofers have no caps.
I do like bass but I'm not a fanatic & I don't over do it. It is the quality of the sound that I like over others subs that I've heard. Of course in my room, the 800s hardly ever break a sweat.
As for the marks on the cabinet, if the veneer isn't damaged, you might try one of those 'Magic Eraser' cleaning pads (made by Mr Clean I think). They work wonders in removing marks - but don't get carried away as eventually the finish might be affected...