NIB, never used Sumiko Flux Buster FB-1 phono cartridge demagnetizer device for sale. Includes factory box and manual.The Flux Buster FB-1 is a helpful device for the maintenance of many, audiophile moving coil (MC) and some, moving magnet (MM) phono cartridges. According to Sumiko, “when the magnetically permeable components of a transducer become magnetized, performance can be degraded. Magnetization of a moving coil former (armature) can be heard as loss of dynamics, degradation of image, "mushiness," or a combination of these symptoms. Magnetization of pole pieces can also cause similar problems in fixed coil cartridges. The performance of step-up transformers for moving coil cartridges can also suffer when their formers become magnetized.” (See Sumiko instruction manual) Flat shipping within the continental US: $10,-
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