I've never heard a keyboard player complaining that playing his piano samples through his stage amp does not feel like his grand piano at the concert hall. He just adds a Hall Reverb
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Maybe they are more technically clever than most guitarists. Many of us are full of esoteric BS about tone, or get option paralysis whith more than 3 knobs, or complain about a bright bright pickup and ask for a pickup replacement reccomendation without even touching the guitar's tone knob, blaming the type of wood, the fretboard material, nitro vs lacker, or the oil finish on the neck.