The Galaxy Audio AS-1800-4 is a professional 1800 Series
Wireless Personal Monitor Band Pack with EB10 which includes
four (4) receivers and one (1) transmitter. It can get the
whole band wireless in one package. The unit can enable a
band to distribute one stereo mix to four (4) individuals.
The receiver (Rx) has a stereo/mono switch, button lock,
squelch adjustment, LCD, and a Magnesium Alloy Construction.
You can add an infinite number of receivers at any time.