SONY EF-X - 1995 - EU
This has very dark tape for a Type 1. Seems there's cobalt doping going on here, and the fact they can happily be recorded at +4 without distortion seems to back that up.
It's a well made, well performing Type I from Sony. One of the last generation of Sony cassettes.
Sony Corporation (ソニー株式会社 Sonī Kabushiki Kaisha, // SOH-nee, stylized as SONY) is a Japanese multinational conglomerate corporation headquartered in Kōnan, Minato, Tokyo. Its diversified business includes consumer and professional electronics, gaming, entertainment and financial services. The company owns the largest music entertainment business in the world, and is one of the leading manufacturers of electronic products for the consumer and professional markets, and a leading player in the film and television industry.[better source needed] Sony was ranked 97th on the 2018 Fortune Global 500 list.
Sony Corporation is the electronics business unit and the parent company of the Sony Group (ソニー・グループ Sonī Gurūpu), which is engaged in business through its four operating components: electronics (AV, IT & communication products, semiconductors, video games, network services and medical business), motion pictures (movies and TV shows), music (record labels and music publishing) and financial services (banking and insurance). These make Sony one of the most comprehensive entertainment companies in the world. The group consists of Sony Corporation, Sony Pictures, Sony Pictures Entertainment Japan, Sony Mobile, Sony Interactive Entertainment, Sony Music, Sony Music Entertainment Japan, Sony Financial Holdings, and others.
Sony produced the world's first portable music player, the Walkman in 1979. This line fostered a fundamental change in music listening habits by allowing people to carry music with them and listen to music through lightweight headphones. Walkman originally referred to portable audio cassette players. The company now uses the Walkman brand to market its portable audio and video players as well as a line of former Sony Ericsson mobile phones.
Sony utilized a related brand, Discman, to refer to its CD players. It dropped this name in the late 1990s.
SONY EF-X - 1999 - EU