Circuit-Bent Alesis HR-16 Drum Machines

via this auction and this auction
Top: "This modified Alesis HR-16 features a custom designed Matrix Patching Grid from Diabolical Devices. A single LED patch pin connects bending points which will generate a wide variety of effects and glitches ranging from distorted, filtered and modulated effects to bizarre sounds and warped drum loops. The patch pins have LEDs that will react to ROM data and put on a light show. We have also incorporated a Master Pitch/Clock Rate Control with bypass switch and LED indicator. These are great machines and the HR-16 is loaded with original features. The modification unleashes the evil monster that has been hiding inside since the 80's.
Diabolical Devices aka Class A Electronics, LLC is a leader in Professionally Modified Synthesizer and Audio Equipment, Expert Repair Services, and has a full line of Hand-Wired Tubes Amplifiers and Effects (Diabolical Amplification). Their work has been featured at NAMM, art galleries, music videos, countless tech blogs, and used by musicians all over the world, professionals and enthusiasts alike. The circuit-bending and synth mods are the work of head-technician James Gramling who has spent the last 12 years in professional audio service and electronics prototyping. Check out the new www.circuit-bent.com for updated specs, custom work questions, and new releases from Diabolical Devices

Diabolical Modified Alesis HR-16 Features:
35 point Matrix Patching Grid Triggers Glitches and Effects
Master Pitch/Clock Speed Control with Int/Ext Clock switch and LED
Blue LED Color Change"

video previously posted here

Bottom: "Version B of the Diabolical Modified Alesis HR-16 features a very simple circuit-bending interface and master Pitch/Clock modification. ROM bending is accomplished using 12 position rotary switch, position 1 is off, 2-12 are a variety off odd reactions from bit-reduction, modulation, filtered sounds, to holding and staccato effects. The Pitch Modification is the same as Version 1.
Diabolical Devices aka Class A Electronics, LLC is a leader in Professionally Modified Synthesizer and Audio Equipment, Expert Repair Services, and has a full line of Hand-Wired Tubes Amplifiers and Effects (Diabolical Amplification). Their work has been featured at NAMM, art galleries, music videos, countless tech blogs, and used by musicians all over the world, professionals and enthusiasts alike. The circuit-bending and synth mods are the work of head-technician James Gramling who has spent the last 12 years in professional audio service and electronics prototyping. Check out the new www.circuit-bent.com for updated specs, custom work questions, and new releases from Diabolical Devices

Diabolical Modified Alesis HR-16 (Version 2) Features:
12 position Rotary Switch Circuit-Bending
Master Pitch/Clock Speed Control With Int/Ext switch and status LED"