Description Are you looking for a professional yet affordable power supply? Are you in search of a sturdy trustworthy tool that can do multiple jobs at once? If yes look no further! Our professional power supply must meet you needs. It is one of the best choices for you. Features - Color: Black. - Size: 8.8 x 9.3 x 4.6 cm. - Material: Metal. - USB Input: 5V. - Power supply voltage: 48V. - Use the isolated voltage-boosting technology to effectively prevent the ground . - Use the low-pass filter circuit design to fully filter out the noise from the external audio equipment. - Use soft-start function to avoid the impulsive sound of puff when booting the device. - Use two sets of balanced power supply to balance the input and output signals makes the voltage be balanced and stable and inhibit common mode . - Use the USB-5V voltage boost circuit and the low-voltage power supply technology to prevent harm to the human body to settle the mismatch problems among the different regional electric supplies voltages and .