Electro-Acoustic Research

Electro-Acoustic Research Electro-Acoustic Research (EAR) is the manufacturer of Plan B analog & digital modular music synthesizer products designed by Peter Grenader.

Electro-Acoustic Research (EAR) is a designer and manufacturer of Plan B analog and digital modular music synthesizer products founded in 2005 which is owned and operated by Peter Grenader.

02/07/2026

EAR MODEL 10 MARK II UPDATE:

Pushbutton LEDs now online. Ourside ofthe envelope 2 shape LED not turning on (probably a soldering issue) we have a 100% functional module. You may notice you won't see the EOC LEDs firing on every cycle - that's due to the frame update rate of my iPhone video.

Have a look and let me know if the Model 10 Mark II was worth the work. What do you think I've the big picture?

INTRODUCING THE EAR MODEL 24 MARK II HEISENBERG GENERATORA significant upgrade of the original M24, the Mark 2 is a dual...
01/17/2026

INTRODUCING THE EAR MODEL 24 MARK II HEISENBERG GENERATOR

A significant upgrade of the original M24, the Mark 2 is a dual fully voltage controllable random voltage source with both Smooth and Stepped voltage generators, and an independent output for digital noise.

New features:

The Smooth random generator now has a hold input.

The Stepped generator can be formatted for either uniform or gaussian voltage distribution, quantized or raw random output, random or metric internal clocking, or external clocking.

The Stepped output can be formatted for either quantized or raw (non quantized) random voltages. There are five preset quantized scales (Major, Minor, Chromatic, Whole Tone, Pentachord (Jump by 5ths) with a 6 position allowing the user to load any of seven additional scales (Quartertone, Pentatonic Major, Pentatonic Minor, Dorian, Lydian, Raga Asavari (Indian 5 step scale) or Tetrachord Diatonic (Ancient Greek Jump by 4ths)

Additionally, there is a calibration mode to assure tracking accuracy over an eight octave range.

Currently in qualification/beta, 2-3 months until release and available exclusively through Analog Haven. Price TBD

INTRODUCING THE EAR MODEL 10 MARK II DUAL DASD/ADSR ENVELOPE GENERATOR :First look. Obviously the k***s are ancient, the...
01/16/2026

INTRODUCING THE EAR MODEL 10 MARK II DUAL DASD/ADSR ENVELOPE GENERATOR :

First look. Obviously the k***s are ancient, the pots aren't fully seated and the pushbuttons haven't been installed (or arrived) yet - but this gives you an idea of what to expect from the mighty Model 10.2

Two fully independent digital voltage controllable Envelope Generators which can configured to be either DASR (Delay/Attack/Sustain Time/Decay) or ADSR with each phase 0-30 seconds and attenuverting output level. User options for linear or log/expo curve, self cycling, gate as sustain time, and manual trigger.

Currently in qualification/beta, 2-3 months until release and available exclusively through Analog Haven. Price TBD

Address

Los Angeles, CA
90014

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