Which external fuses are you looking for? The ST-202 has the speaker level fuses, (located above the binding posts in a circular tube,) these are 8amp 1/4 X 1 1/4 FAST BLO. The A/C power fuse, (located where the power cord plugs in, in a little tray), that one is an 8AMP 5 X 20 SLO BLO.
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