Vintage musical equipment is older music gear, including instruments, amplifiers and speakers, sound recording equipment and effects pedals, sought after, maintained and used by record producers, audio engineers and musicians who are interested in historical music genres. While any piece of equipment of sufficient age can be considered vintage, in the 2010s the term is typically applied to instruments and gear from the 1970s and earlier. Guitars, amps, pedals, electric keyboards, sound recording equipment (e.g., reel to reel tape decks and microphones) from the 1950s to 1970s are particularly sought. Musical equipment from the 1940s and prior eras is often expensive, and sought out mainly by museums or collectors. Older gear is often known for its unique tonal or sound-shaping qualities. The cost of vintage gear may be higher than the reissued model or its 2010s-era equivalent, depending on the rarity of the item, how high the demand is for it, and the condition. Vintage guitar As early as the 1970s, musicians began to recognize the value of older instruments from the 1940s and 1950s. Among guitar aficionados, the mass production of both acoustic and electric guitars served to highlight the quality hand workmanship, crafting, finishing and materials of older instruments. Historians such as George Gruhn helped to codify both the monetary value and sound quality of these instruments. Examples of well-known vintage electric guitars include 1950s and 1960s era models like the Fender Stratocaster and Telecaster, and the Gibson Les Paul. Although less well-known and not as financially valuable, older electric guitars under the names of Harmony, Danelectro or Kay are becoming increasingly collectible. Examples of well-known vintage acoustic guitars include Martin and Gibson models typically built prior to the 1970s, 1920s to 1930s Nationals and Dobros, and 1930s era Recording Kings, among others. Prior to the popularity of electronic music in the 1980s and 1990s, electro-mechanical instruments such as the Fender Rhodes electric piano and the Hammond organ were widely used.