The MZC 66 and 88 are loaded with technical advancements that make the system both dynamic and flexible. With 12 or 16 channels of digital amplification, depending on the model, a single unit can power up to eight stereo zones or areas of the home with no need for additional amplifiers. Should a zone require more power, the unit offers a separate pre-amp output for each zone. This output can be either fixed or variable allowing the level to be adjusted from the keypad in that zone. This is perfect for connecting to a powered subwoofer or a larger amplifier to drive multiple loudspeakers.It is possible to control the system entirely from a hand-held remote. If you want to avoid having any type of keypad on the wall, a small infrared receiver can be discreetly installed and the remote will act as a virtual" keypad.Doorbell and telephone triggers can be programmed to mute the system when the phone rings or someone is at the door. The audio then resumes after a pre-programmed time has elapsed. A video signal from a door camera can even be routed to the televisions throughout the home and the picture-in-picture function will let you see who is at the door without missing a moment of your movie.The MZC can sense the audio or video signal from a particular source so it knows if an individual component is on or off. This is critical if a piece of equipment has been manually turned on or off. The next power on or off command from a keypad or remote will automatically establish the correct status of the sources in the system. As your system grows, the MZC allows you to add additional rooms or zones as it becomes necessary. Multiple MZC units can be stacked for larger systems or additions to your home.Since the system is software based, as new technologies become available, the operating system can be upgraded at both the software and firmware level. This avoids obsolescence and allows you to take advantage of the technological advancements that will be offered.