video upload by Aum Guitars - Journeys into Sound
"Trying out the instrument that we made for the film composer Junkie XL AKA Tom Holkenborg. We're kinda hoping it'll be used in one of his film scores at some point.. Technical note - the instrument is capable of self oscillation due to the active drive circuitry on board. The feedback frequencies are determined by a number of factors determined by the player. I used a Zoom G3 in part of the demo to sequence the feedback. The Matrixbrute wasn't used in this demo btw.. http://aumguitars.co.uk/"
Note this video was from 2019. Note the listing below is one from 2022 and has a different finish.
via this listing
"Up for auction is a very rare, custom-built device from France. This was ordered in 2021, and received in 2022, having taken 10 months to construct. It was used in the studio on a soundtrack recording, and is in excellent 100% operational and cosmetic condition. A detailed Owners Manual is included. Please see below for a video demonstration.
The Chaos Guitar is an 8 string Lap steel with dual piezo elements, (one is magnetic), and an E-bow sensor as well as a standard magnetic humbucking pickup. It features a passive mixer and and active section that allows the user to sustain notes using an inbuilt feedback system, (actually 2 of them). One of these systems is built into a slide, (see Vibraslide page) and plugs physically into the guitar when not being held thereby transferring the vibrations back into the body of the instrument. Furthermore, it is possible to insert an effect into the input of the sustain system to process the feedback signal. This can either be added to the original signal or remain independent of it via a switch. Each of the sound producing elements has a direct output for individual processing if desired."
