Electric guitar hookup (3)
I believe the answer is:
amp
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">electric guitar hookup</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for amp that I've seen before include "Unit of electricity, in short" , "Map about electric unit" , "In short, unit for measuring electric current" , "A flow of one coulomb per second" , "Physics unit" .)