Quote:
I still fail to understand why every so-called audiophile doesn't just get a pair of ER-4B, ER-4P or ER-4S and be over and done with it. Instead, they get things like Stax, Sennheiser, or Audeze…and even a few of those who have those terribly coloured cans seem to appreciate IEMs such as the "abominations" known as (FAD's) Piano Fortes! It's got to be the evil Beats effect and the spread of what is known these days as "The Age Of Da Bass", I say!
ER4 is almost perfect.
Pros:
Clean/tight/detailed bass
Great mids
Good treble
Reference level isolation
Cons:
If not fit correctly it sounds really bad
Lacks some sub bass
Somewhat hot treble
Soundstage
Difficult to proper fit
I would say the biggest flaw of it is the soundstage. I don't care that much about it, but in some music it does sound boring because of it. I think it has to do because you push it very far into the ear canal so the sound can't bounce around that much before reaching the eardrums. Still it is kinda cool that a 20+ year old IEM still holds its ground.
Regarding bass: Modern music relies a lot on it (bass and sub bass). This is why Sennheiser HD-650 was tuned the way it was I think to better suit the music of today. For me RE-400 has just the right amount of bass. It gives instruments weight without adding a lot of extra bass because that would be plain bad (where everything would sound bassy). I think there was an old Innerfidelity interview with Fang where he explained the importance of the bassport - how it would give an IEM a more 'speaker like' sound. To do the same with an BA based IEM you would have to use a longer stem (like in the ER4/Klipsh X10). Not sure why but it seems like bass response increases that way. Perhaps this is why the new BA based Shure uses a special canal that is 4 inches (!!) - that way they can reach subwoofer levels. Playing around with the bass port on the RE-400 does a lot to the sound signature so it has some crucial function.
Regarding treble: There was some initial reports that RE-600 in the early stages had sibilance. Some even found RE-400 to have some of it although mild. Haven't experienced this myself. And it seems like not many are experiencing it (not that many reports in this thread). I wonder a little if this has to do with the final signature it got. I read somewhere that a lot of music is mixed to have more treble as it ads to the enjoyment - but if you listen to it with very treble-happy IEM/headphones then it's not that enjoyable anymore - so if treble is toned down it would reach a more neutral level hence no sibilance (I think). Also saw a presentation/interview where it was stated that you could give it the signature you want by using EQ. That is one way of doing it. Personally I don't like having to rely on using EQ.
I wish Hifiman would release a RE-400 with a bit more treble keeping rest of the signature - that would make it even more balanced/perfected, something like in Sennheiser HD-800 I think, that is everything would even out. Even by giving the treble a push by modding I don't find it harsh. I wouldn't hesitate one moment to buy RE-400 TE (Treble Edition), would even pay more for it, if it would ever be released (because the driver they use is awesome)
I like RE-400 as much as ER4S, if not more and it gets a lot more use.