Comparison of 4U module brands

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A comparison of 4U modular synth form factors (or formats), from all known modular synthesizer manufacturers.

Brand name Model Patching Height Smallest width Largest depth Power (DC) Power connections Country Web In production DIY Notes
Buchla 100/200 banana & Tini-Jax 4U 4.25" ±15,+5, +12,+24
CGS Banana sockets or 3.5mm jack 4U ±15
Hexinverter Électronique
Kilpatrick Audio Kilpatrick banana 4U 3" ±15 backplane[1] Canada web Yes No
Polyfusion 2000 1/4" jack 4U 3" ±15 at Synthmuseum
Serge Modular banana 4U 17" ±12


  1. ^ Using 4 banana plugs for +15V, -15V, analogue ground and digital ground

See also