US D409194 S
FIG. 1 is a perspective view of a musical instrument amplifier showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a right side elevational view thereof; the left side elevational view being a mirror image thereof; and,
FIG. 4 is a top plan view thereof.
The rear elevational view and the bottom plan view are unornamented and form no part of the claimed design.