... consists of MA1000, MA1500 and MA2000. MA series amplifier consists of MA1000, MA1500 and MA2000. This series ... : Stereo, Parallel, and Bridge, ground switch and floating ground switch;6.Input sensitivity can be trimmed by -3dB, 0dB,+3dB.7 ... .High technologies IC ensure long time working in any condition. MA series amplifier