Mmm thats jus what ive been told, but from what ive gathered..you buy yourself some 100watt speakers..all headunits only put out 50 per speaker (except sony 52) you wont be getting the full patential, yer it will sound ok..but extra couple hundred get a amp. But from ash was saying he isnt getting a sub..so like youve said, you can tune the speakers to not put out bass..that wont work with ashs situation. But yer all in all id rather get a cheap 4 ch amp