Keeley Electronics

The range now covers compression, boost and overdrive, distortion and fuzz, modulation, delay and reverb, and related effects, with design and assembly kept in Oklahoma. Headquarters are in Edmond, near Oklahoma City, and the firm grew from kitchen-table builds into a larger manufacturing operation that still emphasises in-house production.

For players comparing boutique compressors, transparent boosts or multi-effect utility pedals, Keeley is a useful reference because many of its lines started as circuit refinements of familiar designs and then expanded into original pedals used on studio and touring boards.