• If you still love Etymotic ER4, this is the thread for you… – This thread started in February 2011 and is one of the oldest Head-Fi threads regarding the ER series. EtyDave an engineer who represents the company will often hang around there, helping fans.
• Etymotic Research EVO impressions and discussion – The EVO is arriving soon and this will be the place to check on impressions about it.
Filter / Damper Modifications
• The effect of acoustic dampers on IEMs – Rin Choi uses a ER4B to find out how filters help shape the frequency response of an IEM.
• Etymotic Research ER4S – ER4S measurements, effect of Knowles acoustic dampers and ear tips.
• NRB Mod for more bass on Etymotics – Increase the bass response of Etymotic in-ears easily.
• Removing metal filters from a ER4P – EtyDave explains how to remove the filters/dampers stuck inside the ER4P, can be of use for other Etymotic models also.
• How deep do you insert your ER4? – Etmotics are known for deep insertion but how deep do you need to go? Check it in this comprehensive article by Rin Choi.
• The Effect of Ear Sleeves: Etymotic Research ER4B – Rin Choi did some tests regarding the silicone and foam tips on the ER4B, this is important because not all tips are the same, he also tested the MC5.
• Etymotic Research CUSTOM•FIT ear sleeves: An inconvenient truth? – A good read regarding custom tips, keep in mind this article is from 2013.
Last update 27/02/2021