Sony WF-1000XM4 Wireless Earbuds: Form A to Z

Sony continues to offer more potent advancements in the most current true wireless headset it released, the WF-1000XM4, following the success of the WF-1000XM3.
The V1 chip, which replaces the QN1e chip (in the WF-1000XM3) to significantly improve ANC noise cancelling capabilities, is one of the greatest upgrades of the Sony WF-1000XM4. The WF-1000XM4 continues to use a 6mm dynamic driver and Bluetooth 5.2, which supports both Sony’s exclusive LDAC codec and two more common codecs, SBC and AAC. The earbuds are IPX4 water-resistant.

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The size of the WF-1000XM4 is about 10% smaller than the WF-1000XM3 with rounded corners housing for more comfortable wearing.

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When worn on the ear, the WF-1000XM4 generally does not protrude too much.

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This is when wearing the WF-1000XM3.

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The WF-1000XM4 fills the twist of the ear and the ear cup, The earphone shell is rounded, giving the ear a feeling of firmness and fullness of the ear than the WF-1000XM3, wearing for about 2 hours continuously without ear pain.

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Add tilt angle for easy visualization.

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The charging case of the WF-1000XM4 is further shortened and reduced to 40% in size compared to the case of the WF-1000XM3.

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The continuous battery life that the WF-1000XM4 provides is about ~22 hours (headphone + case) when Bluetooth is turned on and ANC noise cancellation, of which the battery of the earbud is about 7 hours and the case is about 15 hours. I listen at volume ~ 60-70%.


The included eartips are silicone tips coated with polyurethane foam for excellent sound tightness. The feeling of wearing with foam tips is very smooth and tight inside the ear canal, does not cause a lumpy feeling.

Sony introduced that the WF-1000XM4 has Google Fast Pair, which is great when used with Android phones like Sony, Samsung, LG, you open the case cover and the smartphone will immediately pop-up connection. I use iPhone. The WF-1000XM4 does not support multi-device connection, so it can only be used from one source and does not allow quick conversion.

To make the best use of all the features of the headset, you should install the Sony Headphones Connect app to make the customization process more intuitive and easier. The App has many essential features such as setting up virtual assistants Google Assistant, Amazon Alexa and Siri. By default, the left earbud controls thelisten to outside sounds. A single tap will switch between ANC Noise Cancellation and Ambient Sound, and holding your finger on the earbud will activate Quick Attention to lower the volume when you need to interact with your surroundings. In general, this is also easy to find, if you buy it, install the app yourself and install the command according to your usage habits, this app is not very new.

A very valuable new feature in the WF-1000XM4 is the Speak-to-Chat inherent in the WH-1000XM4. Speak-to-Chat is quite responsive and can be customized to suit the needs of each person. For example, you can adjust the voice recognition sensitivity to low or high, or the time to activate Speak-to-Chat before turning it off, or you can turn this feature off if you don’t feel the need. set.

With the Sony WF-1000XM4, Sony still asserts itself as the champion in the village of true wireless headphones with active noise cancellation. The noise resistance of the WF-1000XM4 is very good. It suppresses the bass range better than Momentum True Wireless 2 and reduces highs like mid and treble better than Airpods Pro. I wear headphones and clap my hands, it sounds very small, the car horn playing through the speaker at 88dB sounds small and not annoying.
Ambient Sound has many levels for you to adjust. I leave it open at 13-14 when walking on the street and it’s ok, now the sound inside the headphones will be very similar to when I don’t wear my ears, and at the same time don’t add white noise to the music I’m listening to a lot. .


After experiencing, I realized that the sound of the WF-1000XM4 is sensitive to eartips, so I will divide it into 2 parts.

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When listening to the Sony WF-1000XM4 with the included foam eartips, the headphones for 3 mid-treble bass bands are all strong, overall, the bass is fast, strong, the mid is thick, the high mid is sweet, the treble is bright, clear, and the intensity is also strong. but without as much presence as midrange and bass. Perhaps this girl’s bass is probably the most impressive in the under 10 million range, any brother who is a basshead, likes to listen to EDM and Pop/ Rock, R&B, Hip-hop will love it, you don’t have to look far. Recordings with even, dark basslines, like Billie Eilish’s I didn’t change my number, give the impression that it’s good. I find this high-mid is thicker and warmer than the WF-1000XM3, the low mid is slightly encroached on the upper bass, must be heard at 80% (iPhone) to feel it clearly, this type of sound is also suitable for those who like to listen to music. love or Bolero like Tuan Vu, Thanh Tuyen, music by Bang Kieu, Tran Thai Hoa are also easy to enter.

The soundstage of the WF-1000XM4 when used with foam tips is narrower than the WF-1000XM3 using silicone eartips, the ability to position the instrument is not as clear as its predecessor. However, I know that many of you will not care much about the sound and soundstage because the type of music you like does not need headphones to show like that, for example when electronic, the timbre, dynamics and ability. bass stamping and “chiu chiu” in the mid-high is what needs attention. So option 1: I like the bass a lot, the bass is powerful, the bass is always, “I like listening to the bass the most”, WF-1000XM4 + Foam Tips is the perfect choice for you, I’m pretty sure this one is True-Wireless. The best bass and bass power in the price range of 5 million – 10 million already 😁

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As for silicone eartips, I have tried some silicone eartips from Fiio, RHA, Ortofon and Spinfit, the best silicone eartips model with the WF-1000XM4 is Spinfit CP360. These eartips are for the entire bass range of the WF-1000XM4 much clearer and clearer, the airy feeling is very recognizable compared to the old eartips. The upper bass also no longer encroaches on the mid, this sound range becomes tighter, has a much clearer speed and body than foams eartips.

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The overall sound of the midrange is no longer advanced and less thick, everyone, I mean the high mid becomes higher, quieter and sweeter. I find the sound quality after using CP360 is more suitable to my taste, it helps WF-1000XM4 regain the necessary balance between 3 bands in a recording, increase detail, increase musicality, now this is WF -1000XM4 confidently plays more genres, can hit rock, acoustic and ballads that need subtlety and deposition.

As you have read, I evaluate that the WF-1000XM4 has a dark overall sound, a decent level of dynamics, plays a variety of music, and especially young music. The WF-1000XM4 has a limitation in layering, that is, shaping the instrument, mainly because the treble range still feels “not finished”, this will have to wait for more time to answer. Using more eartips will improve the mid-tone and bass speed a lot, as an upgrade solution with the lowest cost, you will need to buy silicone tips anyway, because it is durable and easy to clean. born.

The noise resistance of the WF-1000XM4 is the best today, if you buy it because of the noise resistance, the article will end. The buzzing phenomenon on the WF-1000XM3 is no longer much, I tested it by sitting in front of 2 fans and turning on noise canceling, the buzzing is still there but very small, insignificant.

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