Johnson Amplification
Encyclopedia
Johnson Amplification was a subsidiary of Digitech by the Harman Music Group, which manufactured and sold amplifier
Amplifier
Generally, an amplifier or simply amp, is a device for increasing the power of a signal.In popular use, the term usually describes an electronic amplifier, in which the input "signal" is usually a voltage or a current. In audio applications, amplifiers drive the loudspeakers used in PA systems to...

s using a design by John Johnson
John Johnson
-Artists and entertainers:*John Johnson , English lutenist and composer*John Johnson , trombonist and percussionist with Simply Red*John Johnson , American television reporter and anchor*J...

. Johnson amplifiers used tube integrated modeling technology, a method of emulating the sounds of several different types of classic and modern amplifier with a high degree of accuracy and ease of operation. The design incorporated the use of tubes as well as solid state circuitry. Among the popular products Johnson offered were the JM-150 combo amp, JM-250 Amplifier head and cabinets, the J-12 foot controller, the J-Station, and the JT-50 practice amp.

Johnson ceased operation in July 2002 and is no longer manufacturing these products, however their amplifiers remain quite popular in the after-market.
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