The Louroe Electronics DA-4 Audio Distribution Amplifier features 1 audio input and 4 audio outputs. It receives line level audio signals from the Louroe microphone and distributes it to up to 4 sources such as VCR, DVR, CCTV monitors with amplifiers, or other audio devices that accept line level input (0 dB @ 600Ω). Each output has a gain adjust potentiometer for correcting the audio level. Maximum gain when potentiometer is fully engaged is 15 dB.