via this auction"LIDER-1 (produced by Formanta factory in 1982 - the one which made a legendary POLIVOKS) is a guitar microsynthesizer designed to be applied by guitar players who use external effects in the live performance or studio work. The synthesizer is a floor-mounted unit with four rubber footswitches; it also has sliders and knobs for changing the parameters of effects. LEADER-1 has 5