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The ES37 provides a simple means to turn any control voltages in to voltage steps corresponding to well tuned (equal-tempered) tones of musical scale. It is scaled to 1V/Octave so a 0V to +5V envelope at one of the inputs produces a staircase of voltages corresponding to a chromatic scale.


If patched to the 1V/Octave input of an oscillator tuned to 'E', a slope of 1V applied to the input will produce the following steps of musical scale:-

(Normal chromatic scale)


If the 1/6 Scale Select is enabled, then the scale produced will be:-

(whole tone scale)


If the 1/3 Scale Select is enabled, then the scale produced will be

(scale of major third steps)


If both the 1/6 and 1/3 Scale Selects are enabled, then the scale produced will be:-

(Alternating half-step/minor third step)


Since the Scale Select inputs can be activated very quickly, the ES37 can produce a wide variety of tonal effetcs, quickly moving between four different types of musical scales (chromatic, whole-tone, augmented triad, and a six-step major-minor scale often heard in certain oriental music).


Accuracy of the ES37 is 3-cents maximum deviation from the ideal equal-tempered semitone over a 5-octave range while the response time for all channels is about 8 milliseconds.




This Module is available to buy as - 


  • A fully assembled module with 3.5mm sockets. (Eurorack 1/8" Standard)
  • A fully assembled module with 4mm sockets. (Banana Jack)
  • A full DIY kit, all parts and components to build your own 3.5mm sockets.
  • A full DIY kit, all parts and components to build your own 4mm sockets




Width: 11hp

Depth: 53mm

Contents: Module, Ribbon Cable, Panels, Screws

Build and Technical Information: Click Here

Elby Designs Serge ES37 Quantizer Eurorack Synthesizer Module

3.5mm or 4mm Jack
  • Shipping Transit.

    With Tracking 7-14 Business Days (Estimated)

  • Sales & Taxes.

    The sale price listed is AUD (Australian Dollar), and is the final price to pay.

  • Payment.

    Credit Card (Visa, Mastercard, Amex), PayPal.

  • Warranty/Returns.

    1-Year warranty against defects, and manufacturing faults. (Click for more)

  • Additional Notes.

    This module is available to buy with 3.5mm (1/8" Jack) sockets or 4mm (Banana Jack) sockets.