Does LS400's '93 Pinoner Sound System has external amp, besides included sub amp? if it does, where would it be located? and is there a way to check that system has an amp?

 

only nakamichi system in 1993 has all 5 channels external. the 93 94 pioneer system still has same set up as the 90- to 92. i channel subamp in the trunk mounted to the left of the gas tank and 4 channels in the radio just like 90 to 92. the radio changed to lower wattsd and the speakersa cannot be used from 93 back to earlier.