SOUND MODULE OR SYNTHESIZER Analog mixer for volca series. 4 channels. LO / HI CUT volume and filter faders per channel. Output and Monitor functions for use on stage. Built-in stereo speakers. Connection for external effects unit. Powerful MASTER chain with stereo image expansion function and compressor with Side Chain function. Analog SYNC output to synchronize several volca units, with a tempo knob to control the SYNC signal. 3 DC outputs to supply power to 3 volca units. Items included: AC adapter, 3 DC-DC cables and 3 audio cables.