|
The ornamental design for a preamplifier, as shown. |
FIG. 1 is a front perspective view of a preamplifier showing my new design;
FIG. 2 is a front view in elevation of the preamplifier of FIG. 1;
FIG. 3 is a rear view in elevation of the preamplifier of FIG. 1;
FIG. 4 is side view in elevation of the preamplifier of FIG. 1 as seen from the left-hand side of FIG. 1;
FIG. 5 is a side view in elevation of the preamplifier of FIG. 1 as seen from the right-hand side of FIG. 1;
FIG. 6 is a top plan view of the preamplifier of FIG. 1;
FIG. 7 is a bottom view of the preamplifier of FIG. 1;
FIG. 8 is a front perspective view of an alternative embodiment of FIG. 1;
FIG. 9 is a front view in elevation of the preamplifier of FIG. 8;
FIG. 10 is a rear view in elevation of the preamplifier of FIG. 8;
FIG. 11 is a side view in elevation of the preamplifier of FIG. 8 as seen from the left-side of FIG. 8;
FIG. 12 is a side view in elevation of the preamplifier of FIG. 8 as seen from the right-hand side of FIG. 8;
FIG. 13 is a top plan view of the preamplifier of FIG. 8; and,
FIG. 14 is a bottom view of the preaplifier of FIG. 8.
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