Vintage Digital say :
The Yamaha Rev5 is a highly sophisticated digital reverberation and effects system which offers warm, accurate simulations of natural and plate reverberation, extensive control, and basically superior sound quality. With a sampling frequency of 44.1 kHz, it delivers full, flat frequency response from 20 Hz to 20 kHz for exceptionally clean, “transparent” effect sound and a broader control range.
Visit the Vintage Digital web site for the full review
You can also hear it on you Tube