Eurorack › Envelope Follower EF-1 by Wildsync Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 Envelope Follower EF-1 by Wildsync €100.00 Envelope follower, amp, gate and trigger generator.Size: 6HP Unfortunately this masterpiece is out of stock =( You can sign up here to get notified when it is back in stock Add To Cart Added! Envelope follower, amp, gate and trigger generator.Size: 6HP Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like Mini Speaker by Stoel Music Systems - 3" speaker with 4W amplifier €118.00 Sold Out 2Multi by Takaab (Siam Modular) - 2x Buffered Multiple €27.00 Sold Out Fade by Bear Modules - Manual CV modulator €82.00 Sold Out Black Joystick2 by Erica Synths - 4 channel recordable Joystick controller Sale Price: €191.10 Original Price: €210.00 Sale ABCD/OR by Herzlich Labs - Passive switched OR logic combiner for fun and profit €47.00 Sold Out