4U

4U groups modules in Buchla and Serge formats.

Module dimensions

The height of 4U format synthesizer modules is four standard rack heights or 7 inches, (177.8 mm). Buchla modules are multiples of 4.25" wide, and most Serge modules are full-width panels that are 17" wide (they occupy the full space within a 19" rack's mounting hardware).

See also

• Comparison of 4U module brands
• 4U DIY parts