Johnson Amplification was a subsidiary of

DigiTech DOD Electronics, or simply DOD, also known as their brand name DigiTech, is an American manufacturing company that makes guitar effects pedals, as well as active crossover gear. DOD is owned by Cortek, the parent company of Cort Guitars. Thei ...

by the Harman Music Group, which manufactured and sold

amplifier An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It is a two-port electronic circuit that uses electric power from a power su ...

s using a design by John Johnson. 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.

References

{{reflist Guitar amplifier manufacturers Audio equipment manufacturers of the United States