I just received by new Privia PX-860 last week. Does someone out there know how to configure the piano for the rich, deep, resonant grand piano sound that the reviewers all raved about? I have tried a number of settings, including "string resonance", "Hall simulator", Chorus, etc. but have not yet achieved the quality of sound that the piano is supposed to have. I play mostly classical but I am not a very good pianist and usually use earphones. Any suggestions?