Lets see if this will Improve something. Im sure it will reduce the noise by 40% But they do say a pressure regulator helps with noise and to stabilize water flow aswell Lelit Silent Pump Vibrationspumpe 4000034 Espresso Kultur Lelit ULKA ARS Cime Fluid O Tech Olab vibration coffee pump ULKA EX5, EP5 Blue Star Coffee Hello baristas, I managed to reduce noise upgrade my Rancilio Silvia X PRO. I think anyone can do it, no special knowledge is required. 1. Changed the vibration pump to the quietest OLAB