Offer Details

Keeley Java Boost – NOS Mullard OC44 Germanium Treble Booster – w/ BoxUp for sale is a legendary Keeley Java Boost in fantastic condition. This isn't just any boost; this unit features the highly sought-after NOS Mullard OC44 germanium transistor, the gold standard for authentic 1960s Rangemaster-style tones.The Java Boost is designed to sit in front of a tube amp that is already working hard. It pushes your signal into a harmonically rich, creamy saturation that modern digital pedals simply cannot replicate. Whether you're chasing the Clapton "Bluesbreakers" sound or Brian May’s signature chime, this is the pedal that gets you there.Features & Tone Controls:NOS Mullard OC44: The most desirable transistor for this circuit, offering a smoother, more musical breakup than newer silicon equivalents.3-Way Toggle Switch:Center (Treble): The classic 1960s Rangemaster setting.Right (Mid): Adds girth and punch, perfect for fattening up single coils.Left (Full): A massive, full-range boost that can turn a clean amp into a wall of sound.Tone Control: Allows you to fine-tune the high-end response to match your specific guitar and amp.Condition & Collectibility:Serial Number: H3294Condition: Excellent cosmetic and functional shape. there is velcro on the bottomIncludes: The original blue boutique Keeley Box with the "OC44" labeling intact.