Modular synthesizer enthusiasts in search of a complex modulation source will be thrilled with the erica synths Fusion Modulator, a Eurorack-compatible all-analog modulation source with tons of inspired functions. The Fusion Modulator features two EMS Synthi functionality inspired looping envelope generators with simultaneous unipolar (0 to 10V) and bipolar (-5V to +5V) outputs, VCA, noise generator, and sample-and-hold circuit.