I feel guilty for never having posted on this thread. So, one comment and two questions:
1) I love my ER4PT (which is the ER4P with the S adapter). They are really awesome headphones
Almost perfect. Great job Etymotic! But since I'm writing, I'll mention just two small things...
2) I miss the controltalk feature on my turbines (and earpods). Etymotic put mics and remotes on everything but the ER4
Does anybody make a replacement cable for that? It doesn't need to be made out of 99.999999999999% pure unobtanium and/or come pre-burned for 10000 hours. I just want the functionality.
3) Occasionally, on some genres of music, I miss the FEEL of the bass on my Monster Turbine Coppers. With some judicious EQ, I can lift up the treble on the Turbines to get very close to the clarity of the ER4s, but not vice versa - i.e., no amount of bass boost on the ER4s ever recovers that jaw-reverberating bass-pounding-inside-your-head that you can get from the Turbines. Is there an IEM out there that has the isolation and clarity of the ER4 (it would have to take Comply P-series tips) but also the head-shaking bass of the Turbines? I may be asking something that's physically impossible as these two headphones have very different types of seal (Monster Turbine = shallow, ER4 = almost a surgical implant).