How to make guitar feedback - on a synth

Who doesn't like a bit of guitar feedback squeal? A great sound which has no easy synth equivalent. Yet maybe here we come close. An Erica Synths DB-01 goes to an EHX Oceans 11 reverb which gives the required feedback starter sound, which is then torn up and given bite by a Fairfield Circuitry Roger That, and at the end for a different flavor, a Dark Glass B3K. With some careful twiddlings the ear-splitting awfulness is quite playable and ready for friends, family to enjoy.

0:00 Guitar examples
0:40 Synthy things
2:05 Reverb starter
2:48 Feedback squeal
4:20 Ear killing highs
4:50 Darker & dirtier
7:20 B3K playable filth

Guitar clips at the start are from the Dead Kennedys and The Partisans.

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