“Having a new cost was over $5000, the Wersi Ex 10 Expander with the 2 MT 61 Controllers can be used as a two manual B3 type organ and foot bass if you have midi pedals.
It has a built in leslie simulator with fast / slow switching. The unit has sliders instead of drawbars.
The Module can run both controllers, midi bass pedals, all 3 at once. Each controller has one midi in, two midi outs, fully adjustable key dynamics, 3 selectable split zones, 100 pre-selectable split and midi channel arrangements, 2 completely programmable wheels for sound modulation and pitch bending, and option of connecting a foot switch. The photo’s of the MT 61′s show some of the paramaters and the numbers to select them, very practical design.
It comes with orchestra, piano, electric piano, and other sounds and has a drum machine inside. Internal reverb and echo, upper and lower keyboard and bass pedal volume control presets, ram cartridge slot for extra sounds, 24 standard drum patterns, accompaniment containing bass, chord, and solo for each rhythm. Set up comes with one volume pedal, power cables, carry bags, and manuals.” Link