the roland csq-100 is a microcomputer-controlled digital cv/gate sequencer. this sequencer is very cool and simple to use with roland tr 808 tr 909 tr 606 and roland cr 78 and cr8000 , and all roland sh !! can run my oberheim obx, prophet 5, pro-one and jupiter 4 it does not accept arp and moog ,the korg ms and yamaha look : url it is very simple to create bass line with your analog synth ! the unit is in very good condition !! no problem ; the sequencer works please feel free to e-mail any questions in advance.