Compact size audio amplifier with 2 line-in and 1 Microphone input is perfect audio amplifier solution for classrooms small meeting rooms and lecture hallsSupports 2x20 Watts @4 ohms default amplifier output or 1x40 Watts @8 ohms (Bridge Connection) Volume/Bass/Treble control by push buttons with IR remote control or RS232 software controlTwo stereo audio inputs switchable by push button IR remote or RS232MIC supports balance/unbalance signal and effectively suppresses external noiseUltra low inrush current no need for power sequencing. This allows multiple Mini Digital Amplifier to be powered on simultaneously without overloading power circuitsAntistatic metal case design with efficient convection cooling