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 Jena by Xaoc Devices - Binary Transfunctioner for Drezno, Waveshaper, Oscillator €217.00 Sold Out Stonk by Tesseract - Joystick and looper €250.00 Sold Out XT by Tesseract - Remote extension module €83.00 Sold Out Micro Gate 2 Trigger by Herzlich Labs - Quad Passive Gate to Trigger Converter €59.00 Sold Out øchd (ochd) by Instruo/DivKid - LFO Module €153.00