An authentic reproduction of the original “System 2500” circuitry from the 70’s that can fit in a standard Eurorack case. The best part? It’s at a very affordable price. Mix in with your existing rig or start your modular synth journey from here. Either way you’re sure to have a lot of fun. Classic 1003 dual analog ADSR generator module from the '70s Authentic reproduction of the circuitry from the "2500" Series Contains 2 identical envelope generators for creating control signals 4 adjustable parameters: Attack, initial Decay, Sustain, final Decay Each envelope is initiated by Gate and Trigger signals Switchable between 2 operating modes for added flexibility Single trigger mode uses only the gate signal to control the envelope Multi trigger mode uses a positive trigger pulse to re-trigger the envelope while a Gate signal is present Manual gate operation via front panel push button with LED for gate signal indication Eurorack specs: 16 HP, XX mA +12 V, XX mA -12 V