yet!
the IE80 needs very little power= fact.
it has a flat impedance response so it will still have about the same signature on a 3ohm DAP= another fact.
it has a nice soundstage even on source with crap crosstalk= subjective opinion
it will sound better with an amp added to the phone= that just an idea, all sources have an amp section. so it's only a matter of having one amp better than the other. some amps are crap, some phones are pretty good. so that statement can be false and is not a fact.
but it's not like we're saying that an IE80 will sound bad on a great amp
. I have an amp and sometimes I use it with the IE80. but mostly I don't and keep the amp for IEMs that need it. so I think it's ok for once if we suggest not to give into consumerism when it isn't really needed an might not change much.