Monacor PA-4040 is four individual 40w amplifiers in one 19" case. The four amplifiers (Zones) have there own level controls and LED display. Each amplifier can drive either a 100V line speaker system or 4 - 8Ω speakers. The PA-4040 has 5 input channels, 3 suitable for microphones/line level and 2 dedicated line level. All input channels have 2-way EQ, gain and level controls. The output of the input channels can be assigned to any of the four amplifiers.