RCS MA-1410 B, 1HE. The MA-1410 is a professional 10-channel mixer preamplifier for general sound reinforcement applications. It has 10 audio inputs with level control and output selector switches for master 1, master 2, master 1 + 2 outputs. Additionally, all 10 input channels have a MIC-LINE selector switch.The device operates both on 230 V AC mains power and on 24 V DC power (e. g. emergency power supply).