*It has a built-in power supply and signal amplifying to support president/delegate units
*Line in/line out (at back panel) for signals input/output, to connect another master unit
*Two independent circuit designed socket built (line 1 & 2 at back panel), each can connect delegate unit up to 36 sets in serial.
*Two source outputs-RCA jacks: mic in, Aux 1 in, Aux 2 in, 2 of them (min in/Aux 1 in) having volume control (can be for microphone's direct input or others), the 3rd input (Aux 2 in) can be used as a sound source to broadcast or play music.
*Three source inputs-RCA jacks: mic in, Aux 1 in, Aux 2 in, 2 of them (mic in/Aux 1 in) having volume control (can be for microphone's dirct input or others), the 3rd input (Aux 2 in) can be used as a sound source to broadcast or play music.
*This control unit has:
1. Treble/bass control
2. Line volume control (for president/delegate unit)
3. Over powered protection (fuse, 5A)
*Microphones limiter: this function is built to restrict 2, 4, 6, or 8 microphones to speak at a time. For example, if the whole system is 20 sets of microphone connected, the mic limiter selecting at "8", there is only 8 microphones can function.
Power supply: AC 110/220 voltage selector
Rated power consumption: 150W
S/N ratio: 60dB