The RS-701 is a single-channel analog beltpack with an XLR-3 line connector and XLR-4M headset connector. A mic preamp with a dynamic range of 130 db enables intelligible voice communication for every volume level, from a whisper to a shout. The beltpack also combines high headroom, low-noise audio and shaped frequency contour (Clear-Com Sound) to deliver crystal-clear audio. The RS-701 is compatible with all Encore partyline products, as well as the PL-Pro line and other partyline systems via Encore interfaces.