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 Little Smashy by Bear Modules - Manual push Trigger €49.00 Sold Out CIU-1c (СИУ-1с) by Paratek - Analog VU-meter €150.00 Sold Out TexMix Douts by Tesseract - Direct Outs & 3,5mm to 6,3mm converter TexMix expansion €40.00 Pico EF (Envelope Follower) by Erica Synths €92.00 Sold Out 3x MIA by Happy Nerding - Mixer/Offset/Scale/Polarizer €83.19 Sold Out