The RockBoard ISO Power Block V6+ is a multi-power supply for effects pedals with 5 isolated transformers and highly filtered power slots (each slot is switchable for 9V / 12V / 15V / 18V) and a single 5V USB output. The RockBoard ISO Power Block V6+ was designed for powering up to 5 effects pedals simultaneously without any noise. The advanced filtering technology used in the DC power slots prevents high frequency noise. Built with individual slot short circuit protection, connected effects pedals are protected in case of a short circuit. With a designated LED for each power slot indicating the slot is working correctly, you can quickly identify any problems without losing power to the remaining pedals.