The ER-301 is a voltage-controllable canvas for digital signal processing algorithms.
http://www.orthogonaldevices.com/er-301
If you had an Unicorn Account you could see a chart with the price development of this module and the average price asked for this module.
in original wooden box, (silver version) rev10 with i2c support
great condition.
Comes with memory card fully loaded with all units, collected from the internet archive.
1400 + shipping
paypal
or pick up in oak park, california in march 2026
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