Editing Pitch control (section)

== Vari-speed in consumer cassette decks ==

[[Superscope, Inc.]] of [[Sun Valley, Los Angeles|Sun Valley]] added vari-speed as a feature of portable cassette decks in 1975.  The C-104 and C-105 models incorporated this feature.<ref>[http://www.rainerlinz.net/NMA/articles/Ferric-oxide.html Ferric-oxide Archeology,6. Superscopes and varispeed]</ref><ref>Marantz Far East In Name Change; Adds Superscope, Billboard Magazine, December 7, 1974, Page 40</ref>

Superscope [[trademark]]ed the name '''Vari-Speed''' in 1974.  The trademark category was '''Computer & Software Products & Electrical & Scientific Products.'''  The trademark goods and Services use was '''Magnetic tape recorders and reproducers'''.  The trademark expired in 1995.<ref>[http://www.mytrademarkia.com/varispeed-73025543.html Vari-Speed trademark 73025543]</ref><ref>[https://ourvinylweighsaton.com Musical Instruments & Musical Recorder]</ref>