Roland Jazz Chorus
Roland Jazz Chorus is the name given to a series of solid-state instrument amplifiers produced by the Roland Corporation in Japan since 1975. Its name comes from its built-in analog chorus effect. The Jazz Chorus series became increasingly popular in the late 1970s and early 1980s new wave and post-punk scenes because of its clean yet powerful sound, durability and relatively low cost when compared to the more commonly used tube amplifiers of the time such as Marshall or Fender. It also found favour amongst funk players in America. It also became popular to use for clean tones in heavy metal, with the most famous users being James Hetfield and Kirk Hammett from Metallica, and Wes Borland from Limp Bizkit.
Most models have controls based on the JC-120's standard setup. There are two channels, one clean, the other with effects. The built-in effects include stereo chorus, vibrato, reverb, and distortion. The amplifier features high and low inputs, a bright switch as well as a three band equalizer and volume for each channel.
Since its inception in 1975, the Roland Jazz Chorus amplifier has undergone several design iterations.
1975 JC-120, 120 watts, 2x12" speakers; JC-60, 60 watts, 1x12" speaker
1976 JC-160, 120 watts, 4x10" speakers; JC-80 60 watts, 1x15" speaker
1978 JC-200, 200W (head); JC-200S, 2x12" speakers (cabinet); JC-50, 50 watts, 1x12" speaker
1984 JC-120H, 120W head (“Bright” switch changed to “HI-TREBLE”); JC-77, 80 watts, 2x10" speakers; JC-55, 50 watts, 2x8" speakers
1992 JC-20, 20 watts, 2x5" speakers
1996 JC-85, 80 watts, 2x10" speakers
1997 JC-90, 80 watts, 2x10" speakers (Eminence speakers)
2015 JC-40, 40 watts, 2x10’’, (introduced stereo input); JC-22, 30 watts, 2x6.5" speakers
The Jazz Chorus is one of the most famous and successful combo amplifiers from its period and its earliest users included Albert King, Andy Summers (The Police), Larry Coryell, Robert Smith (of The Cure, although he used the rarer 160 Watt JC-160 with 4 x 10" speakers), Billy Duffy (The Cult, Siouxsie and the Banshees), Steve Hackett, Steve Rothery, among others. Summers' use of the amp in turn inspired, for instance, Jeff Buckley, whose first amplifier was a Jazz Chorus.
Another notable user of the JC-120 was Steve Levine, producer of bands such as Culture Club, The Beach Boys and The Clash. He often combined it with effects pedals from Boss Corporation, a Roland subsidiary.
- Madsen, Pete (2007). Funk Guitar and Bass: Know the Players, Play the Music. Hal Leonard. p. 81. ISBN 978-0-87930-894-0.
- Browne, David (2002). Dream Brother: The Lives and Music of Jeff and Tim buckley. HarperCollins. p. 72. ISBN 978-0-380-80624-9.
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