Marshall Blog

Item #4

MODEL　　　　　　　：JTM45
SERIAL NUMBER ：None
Appears to have been produced around 1963. Mr. T found this amp in an article in a Japanese magazine featuring “Musical Instrument Stores in London.” He dropped a line to the shop on Denmark Street in London and obtained it. At last we can see the “JTM45” logo. The front panel, which is referred to as “the Sandwich Front,” is the third generation of JTM45 amps. The polarity switch disappeared, and Marshall started using “LOUDNESS” instead of “VOLUME.” The sound is very mild. It is almost completely in its original state.

Enlarged photo of the voltage selector on the RS mains transformer. This selector was necessary since there were different voltages in the UK depending on the region.