TEST SERIES 4ms Dual Looping Delay Mutable Instruments Rings by Outsider Sound Design February 15, 2019 Sound design experiments with 4ms Dual Looping Delay and Mutable Instruments Rings. For Eurorack, Modular Synthesizers, Effects Pedals, and Noise Makers please visit this affiliate link to our friends at Perfect Circuit Audio. Share Share on Facebook Tweet Tweet on Twitter Pin it Pin on Pinterest