For 25 years, Keeley Electronics has built pedals for players who care deeply about sound. It all began in 2001 with Robert Keeley, a workbench, and a humble compressor pedal. That first compressor helped define the company and became one of the most important designs in Keeley history. Over the years, the Keeley Compressor continued to evolve. The original design grew into the four-knob Compressor, followed by the Compressor Plus. Each version gave players more control while preserving the musical feel that made the original so popular. Now, Keeley returns to where it all started. The Compressor Plus Germanium celebrates 25 years of Keeley Electronics while moving the Keeley Compressor forward for a new generation. Germanium at the Heart of the Circuit At the center of the Compressor Plus Germanium is a Japanese-style germanium transistor. Keeley uses germanium in both the audio output section and the compressor’s side-chain feedback circuit. As a result, the Compressor Plus Germanium brings a new character to a familiar design. The circuit retains the control and versatility players expect from a Keeley compressor while adding the unique response of germanium. This is not simply an anniversary finish or a cosmetic update. Keeley has changed the circuit itself to create a new version of one of its most enduring pedals.