Behringer 140 Dual Envelope LFO Module140 ENVELOPE LFO This is the Behringer SYSTEM 100 140 DUAL ENVELOPE LFO. An authentic reproduction of the original System 100M circuitry from the 80s that can fit in a standard Eurorack case. The best part? Its at a very affordable price. Mix the 140 DUAL ENVELOPE LFO in with your existing rig or start your modular synth journey from here. Either way youre sure to have a lot of fun. The Envelope Please The 140 DUAL ENVELOPE LFO features 2 independent