Please note: this is a kit and requires assembly. It is an advanced build with surface mount components. The 2HP Buff Mult is a precision buffered multiple, perfect for your 1V/O sources. An LED on each channel indicates positive or negative incoming voltage: red is positive, green is negative. Channel one cascades into channel two, giving you up to 7 outputs. Features:Two Channels:Cascaded input: CH 1 > CH 2LED voltage indicator on each input Specifications:Current draw:Depth: 22mmWidth: 2HP