It would depend on the size, acoustics, and other settings of the room. Generally, it can pick up eight speakers per Quattro unit.

Yes. All Quattro3 units can daisy chain to each other.

Each unit comes with an Ethernet cable to daisy chain, and power each unit individually.

All models of the Quattro3 can be daisy chained and powered from one power source except from the MT301. The MT301 is the only model that requires individual power source for each unit even when daisy chained. In order to enjoy this feature you will need to purchase the Power Daisy Chain kit, which includes a 48V power adaptor.

Up to 15 Quattro3s can be daisy chained together and up to 8 units (except MT301) can be powered from one source.

There are two LED lights on the Ethernet Jack of the Quattro3. When an Ethernet cable is connected and there is no daisy chain connection made – the light will be red. If the Ethernet cable is connected successfully on both ends – the light will be green.

Both the MT301 and the MT304 have the standard USB interface. The MT304 has an additional power module that allows it to be part of a "power chain" when powering units from one power source.

We provide a power daisy chain cable that is 8ft long. If you wish to purchase an additional Ethernet cable we recommend one no longer than 15ft, otherwise the audio quality will diminish.

Yes, you can connect an external microphone and speaker to the Quattro.

The MT302 and MT305 models replace your existing phone and connect directly into the wall phone jack (RJ11).