Roland System-500 510, Eurorack Module, Analogue synthesiser voice consisting of VCO, VCF and VCA based on the Roland System 100m, VCO with outputs for triangle, sawtooth and square wave (with pulse width modulation), Classic Roland low-pass filter with resonance control, two mixable audio inputs and two modulation inputs, Two-stage switchable high-pass filter, VCA with two mixable inputs, Two outputs and switching between linear and exponential response, Power requirement: 75 mA (+12 V) / 60 mA (-12 V), Width: 20 HP, Height: 57.2 mm