AP-4- RM is a four zone manual audio monitoring rack mounted base station. It contains four audio inputs (terminal blocks) for connecting up to four Louroe microphones for live monitoring and has four audio outputs (RCA type) for connection to a DVR with multiple audio inputs. The AP-4 also contains a selectible audio output (RCA) for connection to a VCR or to a DVR with only one audio input. An audio input (one) is available for audio playback from the DVR or VCR. A built-in speaker provides live audio and playback audio.