The JuiceBlock 3 3-Slot 500-Series Power Block from SM Pro Audio can be used to power and house up to three 500-Series modules in a vertical configuration. It features a front panel controllable internal patching system that allows you to feed the audio output from one module into the input of another, or link a single input to multiple modules simultaneously. The JuiceBlock 3 has three balanced XLR inputs and outputs as well as three unbalanced 1/4" inputs and outputs. It also has 48-volts phantom power. The JuiceBlock 3 has full compatibility with 500-Series Modules.