Features: Compact size and lightweight power supply for guitar effects. 10 isolated DC outputs: 4 * 9V 100mA, 3 * 9V 300mA, 1 * 9V 500mA, 1 * 12V 300mA, 1 * 18V 100mA. With a switch for LED lights, if you turn it on, all lights would go on after the power is connected. Specially designed with a USB port for charging mobile phone or tablet. Short-circuit protection for stable and safe power supply.