Marshall Blog

Item#10
MODEL                  ：1987T　JTM45　MKIV
SERIAL NUMBER：7515
With tremolo.  That means it has the same circuit as 1962 Bluesbreaker.  Around ’66 made.  In those days, Marshall gave the name of “MKIV” to all tremolo models.

It has extra pre valve for the tremolo.  Of course, the footswitch jack is for tremolo, however, almost no one can see the original footswitch.

Item#11
MODEL                  ：JTM45/100　SUPER PA AMPLIFIER
SERIAL