There are 5 models in one zone mixer amplifier, namely MP812/MP825/MP835, MP210U/MP310U, MP906/MP912, MP7806/MP7812/MP7825/MP7835, MP8712/MP8735/MP8745.there are equipped with 70V/100V speaker output and 4-16 ohms speaker output, rated power 60w~450w,with USB/SD/FM/MIC/AUX/Bluetooth and so on. AUX output for extend amplifier.