Hi Jose
There are several pianos, with Grand,Rock, and mono as standards . Their Grand is certainly as good, if not better than some mainline arrangers. I can't get more specific, as it is too subjective. The Grand, to my ears, is full with all of the expected overtones.
Bernie
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact