Panasonic Lumix DMC-G7 Digital Camera External Microphone Vidpro XM-AD5 Mini Pre-Amp Smart Mixer with Dual Condenser Microphones for DSLR&rsquo;s, Video Cameras and Phones Greatly enhances your microphones input signal resulting in clearer, crisp audio recording Attaches to the shoe-mount of your camera and accepts all 3.5mm or XLR microphones Features two 3.5mm mini-jacks plus one XLR mic input Frequency Range: 20Hz  20,000Hz Powered by 48V Phantom or one 9V battery (not included)