It's so quiet and soft, I'm shocked really. A beautiful and sleek appearance but dead quiet. We're on a Rapid Transit line, this unit should be very alive when it's not at the moment. I was at 80 mph in a 60 zone and I could not hear flange, wheel rub of any sort. Please devs look into this as soon as possible, there plenty of corner to take here and you shoot from a station in general at 50% power sometimes, a sudden jump from one spot causes the train to move sideways which release a loud and violent flange, it's so exciting I hear it all the time when the EMU's here in Brisbane QLD at a major station, Roma Street, the EMU's here scream on the rails as the wheels rub against them violently sometimes. This being a rapid transit route it's just perfect guys if you had this sorted. I'd be very happy.