My audiences absolutely have noticed when I changed equipment. When I showed up with my Tyros 3 the comments were numerous. And later when I added the Bose system the same thing happened.

Often even while setting up at new places the AD will comment about the equipment I have. And almost every gig I play there will be folks asking a lot questions about the keyboard or speakers while I am loading up to leave.

So yes, in my experience, the audience does notice the difference.

Hammer