Joyo ZGP Noise Blocker, Input Voltage Isolator, Isolates hum, noise, crosstalk, and ground loops from non-isolated power supplies and signal patches, Converts the multi power supply into a true independent daisy chain output power supply, Filters ripple noise from the power adapter, Breaks the ground loop and provides independent output with stable 9 V output voltage, Input voltage: 9 V DC, Output voltage: 9 V DC, Output current: 800 mA, Dimensions (W x H x D): 16 x 16 x 63 mm, Weight: 17g, Includes DC connection cable