For an old timer in the rapidly growing IEM market, Etymotic ER4 has stood the trial of time very well. Granted it is not a sound for everyone, it is still has one of the top spot among some of the more expensive new comers. For a price around $180 these days, it is a deal not to be missed by any analytical listener. Though I do find ER4S to sound a little better, the more practical thing to do will be to get the 4P and an extra aftermarket adapter. This way you can have two IEM in one package, especially consider that they do sound different enough to worthwhile. But if you are a diehard Etymotic fan who doesn’t mind carrying an amp around, ER4S will work out just as well. A Sonic Diamond is awarded to ER4S for its outstanding value though the rating will be even higher if not for the requirement of dedicated amping. Please refer to the list for a complete list of rating.
*[24th Nov 2010] Due to the recent increase in street price regarding both ER4 models, ratings have been adjusted. Please refer to the list for an updated listing.
Edited by ClieOS - 12/8/10 at 8:20pm