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The Keeley Blues Disorder is an analog 4-in-1 overdrive and distortion pedal that combines the circuits of two legendary pedals: the Marshall Bluesbreaker and the Fulltone OCD. Part of Keeley’s 4-in-1 series, it allows you to independently toggle the tone stack and the clipping stage between these two classic designs to create hybrid "in-between" sounds. Functionality & ControlsThe pedal features three main knobs—Level, Tone, and Drive—and two toggle switches that define its character: Tone Switch:BB (Up): A transparent, high-frequency filter.OC (Down): An active mid-range boost with a high-frequency roll-off.Drive Switch:BB (Up): Soft-clipping overdrive that mimics a cranked tube amp.OC (Down): Hard-clipping distortion for a more aggressive, edgy tone.By mixing these switches, you can access four distinct drive voicesPure Bluesbreaker: Both switches in the BB position for low-gain, transparent overdrive.Pure OCD: Both switches in the OC position for thick, hard-clipping distortion.Hybrid 1: BB Drive with OC Tone for a "throttier" medium-gain sound.Hybrid 2: OC Drive with BB Tone for an aggressive but clear crunch.Key Technical SpecsBypass Modes: Switchable between True Bypass and Silent Buffered Bypass by holding the footswitch for two seconds.Power: Operates on 9V or 18V DC (for increased headroom), drawing roughly 29 mA.Build: Handcrafted in Oklahoma, USA, with a proprietary aluminum enclosure and top-mounted jacksCondition: Mint condition with note to minor blemishes on the bottom of the pedal as shown