The super-compact AX1 Handheld Transmitter lets you convert any dynamic microphone into a wireless mic. Just plug in the AX1 and you're good to go! And, because it's a little smaller than an XLR connector, you won't even know it's there. Like all AirLine transmitters, the AX1 operates on a triple-A battery with 14-hour battery life and delivers reliable reception and transparent sound over long ranges. Plus UHF (Ultra High Frequency) means clearer frequencies with less interference. Once you fly with AirLine, no other wireless makes sense.Borrowed from our UHF Series One Systems, the UR1 diversity receiver gives you reception you can always depend on. It features 1/4" unbalanced and XLR (mic/line switchable) balanced output jacks, Power switch, Peak LED, Diversity AB LEDs, RF Level Meter LEDs along with Squelch and a Volume controls. You can mount one or two UR1s in a single rackspace with Samson's DR2 Rackmount adaptor.