Hey guys,, Just a little tune up and update on my Classic: ulka pump replaced with olab's silent green pump very close to a finished project. But there is still things to come :) possible by the end 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 Liberty Pumps LE41AV 4 10 HP Sewage Pump 1 Ph 115V Vertical Float 10Ft Pompe Valvole Lelit Elektra, La Pavoni, Bugatti, Isomac, Pontevecchio, Quick Mill, Lelit, Zacconi Vibratory Pump Silent Green 230v 50hz 4000034 OLAB Silent Green Espresso Machine Vibration Pump 6mm IN 6mm OUT 230 240 Vac LELIT 4000034 ESPRESSO MACHINE COMPANY