Supports 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 control. Two stereo audio inputs, switchable by push button, IR remote, or RS232. MIC supports balance/unbalance signal and effectively suppresses external noise. Ultra-low inrush current, no need for power sequencing. This allows multiple Mini Digital Amplifier to be powered on simultaneously without overloading power circuits. Anti-static metal case design with efficient convection cooling.