RapcoHorizon MS-4 Rackmount 4-channel splitter is designed for use in both live and studio applications, and anytime you require multiple mixes. This rugged, single space rack unit is built with a steel chassis for superior shielding and durability. Each channel provides an XLR female input, one transformer isolated XLR male output, and a direct (non-isolated) XLR male output. The transformer isolation allows multiple splits without the undesirable effects of impedance drop or DC voltage leak between consoles or recording devices.