Dual Envelope Generator + LFO
http://www.rolandus.com/products/system-500_540/
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Excellent condition 540 envelope from the Roland System-500 series (in collaboration with Malekko).Dual ADSR style envelope with lots of features, including slow and fast modes, manual trigger buttons, looping mode (each envelope can be used as an LFO), two regular and one inverted outputs per envelope, and an onboard LFO with simultaneous wave shapes available.Ships carefully packed in original box with power ribbon cable.

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