The Audix R42 Wireless System is a professional, two-channel UHF diversity wireless microphone system designed for simple setup and reliable performance in small to midsize venues. Built around the rugged all-metal R42 Dual-Channel Receiver, these systems are sold in pre-packaged configuration kits (often under the AP42 series name) depending on the microphones and transmitters required.

The core receiver module offers high-performance specs suited for live performance, theater, and corporate presentation environments:

• Dual-Channel Operation: Houses two independent wireless receivers in a single rack-space chassis, saving critical gear space.
• Frequency Bands: Available in two frequency ranges depending on your regional layout—A Band (522–554 MHz) and B Band (554–586 MHz).
• RF Performance: 32 MHz wide spectrum bandwidth with 106 pre-coordinated frequencies to avoid interference.
• Operating Range: Up to 300 feet (91 meters) line-of-sight.
• Simple Syncing: Features one-touch auto-clear channel scanning and an infrared (IR) beam to link transmitters instantly.