 They are quadri-current, operating under 25 kV, 50 Hz AC (LGVs), 15 kV 16⅔ Hz AC (Germany, Switzerland), 3 kV DC (Belgium) and 1.5 kV DC (Dutch and French "lignes classiques").Their top speed is 300 km/h (186 mph) under 25 kV, with two power cars supplying 8,800 kW.When operating under 15 kV power output drops to 3,680 kW, resulting in a very poor power-to-weight-ratio on German high-speed lines.