The newly designed glsd40pv series mixer integrates the new design, and further combines the special technology of professional mixer from the perspective of mixer. Specially designed independent monitoring integration, so that the tuner can monitor all channels and buses conveniently and flexibly. Studio compound transistor d-pre voice amplifier, built-in flexible 9-segment stereo equalization, 24 sets of powerful editing digital effects, rich input and output channels (4 stereo channels + 1 stereo return, 4 group + 2aux + left and right stereo insert function and stereo balanced output), independent 48V phantom switch, 4 stereo channels (2 channels with H-7 function)