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Ultimate Motor
Walker AudioEstimated price (community-sourced)
Around — community and catalog average, updates slowly
About the Ultimate Motor
The Walker Audio Ultimate Motor Controller is an outboard motor controller for turntables using AC motors. It provides 33 1/3 and 45 RPM speed selection with fine speed adjustment, and includes a phase switch to optimize motor phase. Walker described it as supplying a clean, stable power drive signal to reduce cogging and speed drift while improving sound stage stability, dynamics, and harmonic clarity. The Ultimate version was offered with upgraded parts such as Teflon boards and nude resistors.
Specifications
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