The Iso-Max PI-2XX is a two channel line input isolator designed to prevent and eliminate noise in professional balanced audio systems by isolating the input of the connected device. The design begins with a rugged flanged enclosure that comes standard with gold plated XLRs and a removable screw-down barrier strip for easy installation in NEMA enclosures. Plug and play easy to use, this passive interface does not require any power to work. Inside are two Jensen high performance transformers that are able to withstand signal levels to +19dB at 20Hz without discernible distortion. These provide galvanic isolation between the input and output to eliminate hum and buzz caused by ground loops, rejecting noise by as much as 124dB. To further optimize the performance, a bottom mounted 8 position ‘set and forget’ dip switch enables the user to configure the PI-2XX grounding scheme as needed.