etymotic-research-er4s-micropro-reference-earphones
  1. planx

    [REVIEW] Etymotic HF5 or the ER-4S?

    Who here wants the cold and precise Etymotic ER-4S? No? Who here wants the cold and precise Etymotic HF5? Who doesn't know which Etymotic to choose? Luckily, I have both and I have owned every other Etymotic product before that as well (minus the ER6). Personally, I’m a huge fan of Etys mostly...
  2. Jasper994

    My IEM Review (Shure E4/E5, UE Super.Fi 5 Pro/EB, Etymotic ER4s)

    Let me start by first saying thank you to the people who made this review possible: Thanks to all the wonderful folks at Ultimate Ears for letting us tour their factory. It was their wonderful “door prize”: A free set of Super.Fi 5 Pros that got this review started. Thanks to Matt...
  3. Etymotic Research ER4S MicroPro Reference Earphones

    Etymotic Research ER4S MicroPro Reference Earphones

    The ER-4 MicroPro earphones are the next best thing to live music, with noise isolation far surpassing that of active-noise-reduction earphones. The ER-4's require NO batteries, and can be plugged into any audio source. Their 20-25 dB of external noise exclusion allows you to hear the full...
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