This site is the first sun 25 years to wear a sword: Etymotic Research ETM ER4SR headset sun single

This is the beginning of the message from the end of June brush Aunt Zhang, see the following article, was instantly poured a chicken blood.


Reliance on faith is exclusive to Dafa devotees, but on my HiFi road, ER4s started (for the loss, please move on to another sun bill). So far no matter what kind of earplugs are changed, but an ER4B will always be placed in the portable carrying case, not to escape evil spirits, one is the feeling, my God, the sound of this earplug is really good and simple and contrived, with those outside the demon goods It's so different! Second, when you hear the wrong front end, you can easily hear the tuning direction of the front end by pulling out the ER4B.

Therefore, the new product for Etymoticus is undoubtedly the biggest touch for me. This is after all, when I released new products, I was almost still in my mother's womb.

First, the next single

See the message the first time the official website of Etymotic Research to view, quote USD399 + UPS international freight USD52.94, to hand to less than RMB2700 lost. Meiya, eBay did not find any goods. Suddenly thought of thinking mainstream, it is registered on the official website of Hong Kong, quote HKD2999 but can only send Hong Kong address. In addition, several large domestic businessmen who have business contacts with thinking have already begun pre-sale of the Bank of China at Ma Yunjia RMB3298. After rumors that the Hong Kong Advanced Audiovisual Exhibition will be listed in the country, I can't wait any more, Come On~~~ A few days ago a buddy sent me a link to Hong Kong purchasing ER4SR Ma Yun Hong Kong thinking licensed, completely according to resistance Living. Do not say in which orders, but the current Taobao entire network to sell three in Hong Kong, the same source, the same price RMB2499, Shenzhen delivery, so feel free to look like to buy it.


There is a small episode here, businesses have prepared ER4XR goods, and ER4SR is required to order in advance. Then the question is, what is the difference between ER4SR&ER4XR? From the frequency response curve, the ER4XR rises about 8 dB at 25 Hz, and the mid-high frequency curve is consistent. The official also pointed out that the difference between ER4XR & ER4SR is that XR has strengthened low frequency.

Second, Etymotic ER4SR headphones unboxing

On the day of delivery, I met Ni Kuang. I thought that I couldn't walk through the airline. I arrived at noon on the following day as scheduled and shredded my delivery.

Packaging is much stronger than the old er4, although the box has been seen many times on the Internet, but still full of touching.

a. The front of the box: reference standard in-ear earplugs, not to mention the reference standard these two words, but also Etymotic has been chasing things, the reason why the United States and the United States 25 years no new products, the reason is very simple, ER4S fidelity It's hard to do it again. ER4SR, whose SR means STUDIO REFERENCE, is a product positioning studio reference. Think of Hong Kong Bank's labels on the packaging, proof of identity, and a two-year limited warranty.

b. Box side: ACCUTECHNOLOGY introduction & tell you I am the originator of the ear plug (Zhang Quan egg ha ha ha. jpg) and packing list + tell you again I am a two-year warranty.

c. Back of the box: Technical Specifications & Technical Parameters

Open the two seals and take out the box. Obscure Etymotic, and spectrogram.

Really touched! Finally saw two units quietly stuck in the package, this small envelope filled with performance certification. However, this wording, 呃~~~ (whether it's for thanking us for choosing our new Primary 4 but congratulating you for purchasing the New Primary 4) is not unprepared at all. Well, I just like it.

Inside the envelope is the unit frequency response curve and the left and right unit test results. Chnannel Match is almost identical to er4s. The difference between left and right units is 0.2 dB. There is a one-hundred percent unit consensus. This obsessive-compulsive disorder represents a good madness.

Everything in the package, sponge cover, three sets of two sizes, two pairs. Two pairs of catheter strainers, one strainer replacement tool, one clamp, 3.5mm to 6.35mm plug.

Three, Etymotic ER4SR headset body

ER4SR anodized metal cavity, detachable and easy to replace MMCX plug, equipped with high performance, high sensitivity (8dB higher sensitivity than ER4B, ER4S, low impedance 55Ohms), balanced armature moving iron unit.


This is a very soft sound of wire! Effectively reduce the auscultation effect. The anodized metal was also used at the splitters, except that the interior was not equipped with a tuning resistor in the splitter. Etymotic engineers said that this is already a faith in Etymotic. In addition, it is necessary to have a local laser laser logo. This answer I give full marks!

One of the major updates, MMCX interface, easy to replace the Cable, but MMCX has been evaluated by Shure's rough work in the circle has not been high, ER4SR design completely does not exist this problem, anyway, when pulling the feeling is not easy to force, I always felt that I would break the line. If I designed a groove for insertion and removal would be better, but there is a recess in the plug line facing the cavity, so that the line can not be rotated. Headphone cable plug part of the class clothing material feels good, wear in place will cling to the lower ear (Anyway, I also describe how Phuket Island, anyway, is to help reduce the stethoscope effect)

Fourth, new and old contrast moved: ER4B vs ER4SR

ER4B: "My big ax is already hungry and thirsty."

Me: "Well, I'll give you a photo, what pose?"

ER4B: "Let me anal him from behind!"

ER4SR: "Come on!"


========================= This yellow piece I can not edit the ================ ===========

All these are floating clouds, and the ear receipt is the supreme principle:

Measuring equipment: AK380+AMP


Mac+Audirvana Plus+APOGEE Duet+SR71b, Mac+Audirvana Plus+ALO CDM

In addition, the statement that to prevent being sprayed, the whole test three sets are used SX models, in theory, should use ER4S to participate in the test more reference, but unfortunately only ER4B at hand.

AK380 + AMP: In this match, ER4SR wins, AMP can not drive enough energy to drive ER4B, so that the sound field, low-frequency dive, can not reach the level of ER4SR.

Mac+Audirvana Plus+APOGEE Duet+SR71b: SR71B and ER4B are the famous 2B combination. The tested result is ER4SR and ER4B are almost incomparable, but carefully scrutinized repeatedly, ER4B's knot is more specific than ER4SR, if using ER4S It is expected that the consistency of estimates will be higher, and the ER4SR will be more dense at high frequencies and more compact at low frequencies. In general, the original trend has only been strengthened.

Mac+Audirvana Plus+ALO CDM: The CDM is a portable decoding and integrator machine that was borrowed from an oil burning office. It was decided at that time that ER4 would definitely introduce a new awareness. Sure enough, the overall performance is very different from the 71B performance, but the CDM is vividly represented as a characteristic of boldness.

At this point, the loading force should be over, let's sum it up. If there is money, I will enter an ER4XR to participate in the survey. However, it is not because of poverty. Next, there should also be some single-benchmark evaluations for borrowing equipment.

Be Continued....

Type C Phone Charger

Day by day more and more mobile phones are with usb-c port, which makes type c phone charger very popularly used in the market. Type c phone charger have desktop type and wall type, and there are usb-c 2.0 and usb-c 3.0, usb-c 3.0 is much faster than usb-c 2.0, and more popularly used currently, usb-c 3.0 output is normally 3.8V-6.5V 3A, 6.5V-9V 2A, 9-12V 1.5A 18W, it is with PD, PD means power delivery, which can transfer high power at one time, this is why your mobile phone and tablet can be charged fast! And one more point, if normal usb-c port not with PD, the output is only 5V 3A, it doesn`t charge so fast like the one with PD.


Yidashun not only has home type-c phone charger 12W 18W 30W 48W 60W, but also car usb-c phone charger 24W, and they are also with usb-ports, which can charge all different devices at one time anywhere!


61w usb pd charger  (1)

type c phone charger 30w

60w type c adapter

Type C Phone Charger,Type C USB Phone Charger,USB C Phone Charger,Type C Phone Power Charger

Shenzhen Yidashun Technology Co., Ltd. , https://www.ydsadapter.com

Posted on