Function f(x), LLC - Guitar PedalsFunction f(x), LLC, is dedicated to designing and manufacturing exceptional guitar pedals for tone enthusiasts and pedal aficionados. Our goal is to provide customers with reliable and aesthetically pleasing musical devices that deliver outstanding tone in any live performance, studio, or home setting.

So that we can provide our customers with guitar pedals that perform consistently in a variety of environments and that are easy to repair/replace, we do not use vintage, new old-stock (NOS), or otherwise obsolete components in our products. Where possible, we use RoHS-compliant components, including lead-free solder. All manufacturing and assembly is done in the United States.

Our headquarters is located in Elk Grove Village, IL, just outside of Chicago. We have additional R&D in New Jersey.

If you have questions about our products or company, please don’t hesitate to contact us.

Friends of Function f(x)

The following is a list of companies, web sites, or people that we respect, patronize, or just generally think are cool.

Black Arts Toneworks (guitar pedals)

Dr. Scientist (guitar pedals)

Fjord Fuzz (guitar pedals; based in Norway)

Madbean Pedals (DIY effects pedals)

Mike Hermans (music gear demo videos)

Sean Gibson (music gear demo videos)

Manskirt Brewing (craft beer)

Tight Camera (photography on the cheap)

Smallbear Electronics (pedal parts)