The Sony X IV J. League cassette is a Type IV metal audio cassette tape designed for professional-grade recording and archival purposes. Part of Sony's premium lineup, this limited-edition blank tape features branding related to Japan's J. League soccer association.
Sony X IV J. League Technical Specifications
Type: IV (Metal)
Magnetic layer: Uniaxial metal particle formulation
Year: 1982
Made in: Japan
Sony X IV J. League Key Features
High-coercivity metal particle formulation
J. League-themed branding and packaging
Compatible with metal bias settings
Durable shell construction
Designed for long-term storage stability
Improvements over Previous Generation
As a Type IV tape, the X IV J. League provided enhanced MOL (Maximum Output Level) and extended frequency response compared to Type II chrome-based cassettes. However, specific technical improvements over earlier Sony metal tapes remain undocumented in available sources. The uniaxial magnetic layer alignment suggests optimized particle orientation for improved signal-to-noise characteristics.
