4ms Company

4ms Company is a US-based manufacturer of audio electronics founded in 1996 by Dan Green near Chicago as a guitar stomp-box pedal maker (originally called 4ms Pedals). In 2009 the company transitioned into Eurorack modular synthesizer equipment and no longer produces guitar effects pedals. It is now headquartered in Portland, Oregon, and is known for specialized modules such as clock signal generators, audio mixing modules, and complex oscillators and filters, many of which are available as DIY kits.