If you've experienced a variety of sound devices, you've probably used ER4S or ER4P products from Etymotic Research and you've probably heard it. It is a device that shows overwhelming ability in monitoring in ear earphone.
I also have been using ER4S for the first time about 15 years, and it was impressive enough to use again recently. However, the lack of emphasis on the low frequency of the acoustic part is that it was somewhat difficult to use as an allround form.
The ER3 series has been introduced in Etymotic Research, the ER3XR and ER3SE models. It has somewhat different acoustic characteristics than ER4, and XR is emphasized rather than the low frequency band and is suitable for all-around type.
It has a single custom balanced amateur driver (BA) and has a smooth frequency response of 20Hz-16kHz. Although the ER4 series was difficult to use in smartphones and portable devices due to its high impedance, the ER3XR has a low impedance of 22 ohms and a sensitivity of 103dB, making it convenient for use in portable devices.
Compared to the ER4 series, the components seem somewhat unfortunate.
Includes extra ear tips, filters, and filter replacement tools in a portable pouch. The green filter will be familiar to users who have used the ER4 series.
A product with a triple ear-tip. The overall shape is very similar to the ER4 series, and the MMCX type connector between the unit and the cable makes it easy to separate cables and units. However, it is not compatible with other cables because of its groove for stable fixing.
Y branch point, a slide, and a 3-pole gold-plated plug. A clip is attached to the bifurcation to prevent touch noise.
The triple ear tip is available in two sizes, and you can see how the filter is mounted when removed.
The fit is similar to that of ER4. Due to the fact that it is deep inside the ear, it is quite heterogeneous at first and comfortable to adapt. Thanks to this, it is possible to obtain a sufficient volume even with a small volume, and it has a very high car sound which does not require noise cancellation technique.
I linked the ER3XR to a smartphone and listened to a variety of genres of music. I kept emphasizing the ultimate resolution of the Etymotic Research product line, It's very good.
The vocal and instrumental sounds are very neatly expressed, and the thick, fast response bass is added to ensure that the genres, such as heavy metal and hip-hop, is fully digested. Similar to the ER4 series, it is a product that gives more personalized sound. Another masterpiece was born with improved design in overall design and convenience. End the reviews.
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