KPS 900 PHASE SHIFTER
The Jen KPS 900 Phase Shifter is a rare and highly regarded vintage analog effects pedal manufactured in Pescara, Italy, between approximately 1968 and 1973. Produced in the legendary Vox Italy factory, it is prized by collectors for its exceptional build quality and its ability to deliver lush, organic modulation. The pedal is housed in a heavy-duty, cast-aluminum enclosure—the same chassis used for the iconic Jen Tone Bender—and typically features a black and silver finish. Technically, the KPS 900 is celebrated for its "swirling" and transparent sonic character, often compared to the Hendrix-style Uni-Vibe. Unlike the more pronounced sweep of contemporary MXR or Boss phasers, it offers a milder, smoother tonal property that remains musical across its range. It is a 100% analog device, powered by a 9V battery or DC supply. Due to its limited production years and association with vintage Italian manufacturing, it remains a sought-after piece of musical history for tone enthusiasts.