Module formats

Jump to navigation Jump to search

For synthesizer modules to work well together in a modular system, they need to have a few basic characteristics in common, such as physical size and power supply considerations. Thus, several standard module formats have been developed over the years, and manufacturers design their modules to adhere to one or more of these standards.


1U is 1.75 inch high. Unusual but used by:


3U is 5.25 inches (133.35mm) high: Used for:


4U is 7 inches high. Used by:

  • Buchla, modules are multiples of 4.25" wide.
  • Serge, most modules are full-width panels, i.e. 17 inches to fit a rack.


5U is 8.75 inches in height. Used by:

  • MOTM, 1.75 inch wide per unit.
  • MU aka Dotcom.


6U is 10.5 inches high. Used by:

  • Modcan A series, panels are 2.25 inch width.
  • Wiard 300 series

Other formats

Brands which do not use standard racking formats for their modules:


This page uses Creative Commons Licensed content from Mod Wiggler Wiki:Module formats (View authors).

See also