Abstract: A cartridge equalizer for obtaining excellent sound quality following the original sound with high fidelity by minimizing the positional shift of the cantilever fulcrum of a cartridge by mounting the cartridge equalizer to a portion near the cartridge of the tone arm of a record player and providing a well-balanced, suitable amount of weight. The cartridge equalizer includes a ring-shaped crossing rod made of a light alloy or the like having respective counterweights mounted at each end of the crossing rod, and a ring-shaped fitting positioned at the central portion of the crossing rod for fastening the cartridge equalizer to the tone arm.