midiplus MS5 Active Monitor Volume: It can be adjusted from -30 dB to 0 dB. EQ: Choose three switches to adjust the LF,MF,HF of EQ. Interface: Three input options: RCA ,TRS and XLR. Amplifier: low noise, Class AB amplifier XLR balanced, 1/4"TRS balanced, RCA unbalanced inputs Dimension: 300*240*190mm Weight: 6.6Kg each Power: 50W Frequency respond (+/-3dB): 46Hz-20KHz AC power input: (Selected)AC 110v/60Hz AC220V/50Hz