Best of luck with that one, mate! Sure, you could make a Roland nasty, thin and brittle. But it would still sound like a nasty, thin Roland, NOT a Yamaha! You can't EQ a SteinwayD into a YamahaCFIII, and you can't DSP a Korg into a Kawai. It's kind of like saying you could EQ and compress Frank Sinatra into sounding like Tony Bennett.

I know it's not quite what you intend, but it's funny to see someone who doesn't really play piano wax all knowledgeable... Ask your wife whether she thinks you could do that. Make a Steinway sound like a Yamaha.

The thing is, if you ARE a pianist, the sound of the piano is VERY important. It's kind of like your voice. You want it to sound a certain way. But it doesn't. It sounds like it sounds. It's YOUR voice. A piano, to a pianist, is kind of the same thing. Only, unlike the voice, you CAN change it. Finding the piano sound that YOU like, that makes how YOU play sound it's best, is not the search for the Holy Grail. THIS search is reachable...

I'm sorry, but only a non-pianist (that doesn't make you a non-arranger player!) would dismiss how important the sound of the piano is. Just as a non-singer would dismiss how important the singing voice is... For those of us raised on the piano, it's impossible to think that they are all the same, give or take a few EQ tweaks or so!