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Guitar World
Guitar World
Entertainment
Matt Parker

“Modified connects us with a long-standing tradition of modifying Marshall amps that dates back to the 1970s”: Marshall unveils factory modded takes on the 1959 Plexi and JCM800 –tipping its cap to the amp wizards of rock’s golden era

Marshall United Kingdom
Marshall Modified JCM800 amp on a work bench.

NAMM 2025: Marshall has announced the arrival of its first commercially available factory-modded tube amps, the 1959 Modified and JCM800 Modified.

We knew some form of modified amp was on the way. Guitar World first broke the news last year in an interview with Marshall Group CEO Jeremy de Maillard, in which he told this writer that the legacy amp giant had big plans for new products and revealed “mods came very early into that conversation.”

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