The Behringer 173 Quad Gate Module is an authentic reproduction of the original “System 100M” circuitry from the 80s that can fit in a standard Eurorack case. The best part? It’s at a very affordable price. Mix the Behringer 173 Quad Gate Module in with your existing rig to expand its capabilities and you’re sure to have a lot of fun. The Behringer 173 Quad Gate Module features 4 signal gates (switches) with buffered audio inputs and outputs for immediate signal switching. This provides users the option to choose between a control gate operation, non-inverting (active high) input or an inverting (active low) input. Key Features: Amazing quad Signal Gate/Multiple module from the '80s Authentic reproduction of original "System 100M*" circuitry 4 signal gates (switches) with buffered audio inputs and outputs for immediate signal switching Gates feature control inputs for positive and negative triggers plus LED indicators 6-channel multiples, each with 4 floating parallel connectors for optimal signal integrity Eurorack specs: 16 HP, 40 mA +12 V, 40 mA -12 V Designed and engineered in the U.K.