Our RockBoard ISO Power Blocks are multi-power supplies for effects units and offer a variety of electrically isolated, highly filtered power connections, providing either stable 9V outputs or switchable outputs (9V / 12V / 15V / 18V) and a 5V USB connection. Advanced filtering effectively eliminates high-frequency noise. Separate short-circuit fusing protects the connected effect pedals from damage in the event of a short circuit. Separate LED indicate short circuits for each individual output. In case of a short circuit, only the affected output is switched off, leaving the remaining connections unaffected.