... Optional frequency range: 15 to 60kHzCommonly used frequency: 20kHzEach unit nominal power: 500W, 1000W, 1500W, 2000W, 3000W, frequency is ... greater the power of each unit; the higher the frequency, the smaller the power of each unitAlso can unit combination to ... vibration parts typical weight: 12kgDriving power: analog power supply, numerical control of power and frequency automatic tracking, through ...