eBerry Professional Large Diaphragm Studio Broadcasting & Recording Vocal Condenser Microphone with Mount Clamp and Desktop Tripod Stand, Powered by USB - No Mixer or Phantom Power Needed Powered by the USB connector - no external batteries, mixer, phantom power or other power devices needed! Built-in intelligent chip adds reverb function to the microphone, simply adjust the echo knob on the microphone to get your ideal reverb effect - no external sound card needed! Professional pre-amp chip built into the microphone, you can adjust the recording volume (increase volume by up to 25 times) with the volume knob - no microphone amplifier needed! Plug-and-play standard 3.5mm connector compatible with all types of pc/laptop - no driver and tedious adjustment needed! Accessories: microphone cable, mount clamp, desktop tripod stand, sponge cover, user manual