The RCF AM 1064 60W Mixer-Amplifier has 4 audio inputs. The Mic/Line 1 with XLR audio input has phantom power supply and priority over the other audio inputs through either an external command or automatically, thanks to the VOX circuit, which detects the signal presence. Two adittional Mic/Line inputs with XLR connection, and a Line input with dual RCA connectors can be used to link unbalanced stereo sound sources such as CD/MP3 players, tuners, and others. The amplifier output is available either for low impedance loudspeakers (minimum 4 Ohms) or 100/70V constant voltage line (for loudspeakers having 100/70V transformers). The mixer-amplifier features front panel LEDs that indicate power status and the audio signal level.