Marshall JMP-1 Schematics

The JMP-1 was introduced in 1992. It is a 19″ (1 rack unit), MIDI controlled, tube pre­amp. It is the successor of the 9000 preamps. With its goldbrushed front panel it matches very nicely with the 9100 and 9200 power amps.

JMP-1, 19″ Preamp

PDFHandbook of the JMP-1, (1998).

PDFHandbook of the JMP-1, (2003).

PDFComplete set of schematics of the JMP-1, JMP1-61-04 issue 10, (Marshall, 2001).

JPGPhotograph of the JMP-1.

JPGPhotograph of the JMP-1.