At the heart of the 4000 Series is a rugged True Diversity half-rack receiver, the AEW-R4100, with two hundred selectable channels offered in each of two available UHF bands.

Receivers from both the 4000 and 5000 Series may be linked; they may be monitored by the 5000 Series system software.

The included IntelliScan feature automatically determines and sets the best available frequencies on all linked receivers. Multiple system configurations are available, with handheld vocal microphone/transmitters and UniPak body-pack transmitters designed for use with lavalier, headworn and instrument microphones as well as electric guitars.

200 selectable UHF channels:
Available in two frequency bands:
Band C - 541.500 - 566.375 MHz (TV Channels 25 - 30) and
Band D - 655.500 - 680.375 MHz (TV Channels 44 - 49).

True Diversity reception for interference-resistant operation IntelliScan feature automatically finds and sets best available frequencies on all linked receivers
Advanced digital Tone Lock squelch effectively blocks stray RF; the digitally encoded tone also communicates transmitter data for receiver display

Link and coordinate multiple receiver channels
High-visibility white-on-blue LCD information display
Half-rack receiver chassis with mounting hardware
Dual Compander circuitry processes high and low frequencies separately for unmatched audio quality
All transmitters offer rugged, ergonomic metal bodies, programmable features, soft-touch controls, and 10 mW/35 mW switchable RF power
All components store up to five preset configurations, with customized names if desired