Question What's the difference between RH450 and Staccato´51 Answer From a tech spec point of view the two amps are identical, but where they differ is in the sound. Since our amps are digital, we're able to tune them beyond what's possible with mere EQ and the Staccato'51 is tuned quite differently from the RH450, bringing it much closer to an ideal setting for Rocco Prestia, than the RH450 sound.