The SKM AVX-835 handheld transmitter for the AVX system is fully self configuring which makes the setup of radio frequencies a thing of the past. The AVX matches perfectely to your camera's input sensitivity without having to adjust the audio level on the microphone. The mute switch on the handheld transmitter gives you full controll during your interview. - Very fast setup - Plugs directely into XLR audio input - Ultra compact receiver - Switches on/off by P48 Phantom power - Optimized dynamic range - Auto frequency management - AES 256 encryption - License free - Mute switch - Metal housing - Made in Germany