The SubZero Single Channel Microphone Booster is a compact gain solution for stage and studio microphone setups. Providing up to 25dB of extra gain it gives low-output microphones a stronger signal before they reach your mixer soundcard or other connected equipment. This makes it useful when your microphone needs more level without relying solely on the gain available from your existing setup. The active design runs on 48V phantom power supplied by your connected equipment so there?s no separate power supply to add to your setup. Balanced XLR input and output connections keep integration simple; connect your microphone to the input then route the output to compatible equipment providing phantom power. A 10Hz to 20kHz frequency response (±1dB) supports a broad range of microphone signals.