[Unregistered]

I finally am able to get a pair of Etymotic ER-4S. I feel happy.

There's one thing that makes me curious though: How do I tell if my Ety is actually the ER-4S, not ER-4P or ER-4B? There doesn't seem to be any marking on the phones or the wire. There are two serial numbers, one on each phone, and they match the numbers on the white paper box, which is marked "ER-4S." But I am wondering if there is really no marking at all on the actual phones?

 

[flashbak]

The 4S has the gray plastic colored resistive network as part of the cable.

 

[MacDEF]

The 4S has a grey "pod" where the main cable splits into the left & right driver cables; it also has a smooth, shiny "vinyl" cable.

The 4P has a green "pod" and a slightly rough, dull, "rubber" cable.

 

[Vertigo-1]

The 4B has a black pod, and also the same cable as the 4S.