The Sony INZONE E9 are wired earbuds in Sony's INZONE gaming product line. Developed with the Fnatic eSports team, they come with four sets of silicone and foam ear tips, a carrying case, and have a low-profile design, so you can wear headphones over them for improved noise cancellation in loud venues if you compete.
Our Verdict
The Sony INZONE E9 are okay for sports and fitness use. While they're lightweight and don't come loose if you shake or tilt your head lightly, they are wired-only earbuds. Their design presents potential hazards due to their long cable, as it can snag on tree branches and gym equipment. Still, if you're taking the earbuds out for a casual jog and stay mindful of your surroundings, they'll do in a pinch.
Very good passive noise isolation minimizes higher-frequency distractions.
Fit loosens with intense movement.
The Sony INZONE E9 are decent for travel. They have a lightweight design and very good high-frequency noise isolation that minimizes distracting sounds like children crying. However, their lack of low-frequency attenuation means you'll bear the brunt of airplane and bus engine rumble, and some chatty passengers may be audible. Still, their wired design means they're compatible with most in-flight entertainment systems, and there's no need to worry about your battery running out while you're still traveling.
Lightweight design and relaxed cable gives fatigue-free long-term wear.
No active noise cancelling means minimal attenuation of low-frequencies.
The Sony INZONE E9 are solid for office work if you have a dedicated microphone (or you're fine using your laptop or phone mic). The earbuds are lightweight and comfortable, and their warm tuning rolls off the treble a tad, making them less tiring to listen to over long periods of time. There's also an included USB-C adapter, if you primarily take calls on your phone without an audio jack. Since they're wired only, they forgo many active features like call accept controls and active noise cancelling, but they're not limited by battery life, so they're good to go for as long as your source devices are.
Very good passive noise isolation minimizes higher-frequency distractions.
No microphone.
The Sony INZONE E9 can't be used wirelessly.
The Sony INZONE E9 are solid for wired gaming if you don't need a microphone. The buds are lightweight and comfortable enough for long periods of time, though the earbuds' shell can be a bit small for some people. They have a warm tuning that prioritizes high-bass emphasis over low-bass rumble, which can give footsteps clearer voicing and limit how much rumbly explosions mask details. While this benefits you if you play competitive shooters, it can also reduce immersion if you primarily play RPGs. Fortunately, the buds give you access to a graphic EQ and alternative preset tunings, but you need to use the USB-C adapter rather than the 3.5 mm connection to access the Windows app.
Low audio latency minimizes delay on audio cues like footsteps.
No microphone.
The Sony INZONE E9 have decent audio reproduction accuracy. Their frequency response doesn't deviate significantly from their overall warm tuning, which seems to favor the high-bass for footstep details and sound cues and roll off the treble to minimize long-term fatigue. There's also no audible harmonic distortion, but our unit had a potentially noticeable stereo mismatch, which could cause footsteps to be reproduced as slightly biased to one side. Even so, stereo driver matching is a function of quality control and can vary between units, so yours may not have any.
The Sony INZONE E9 have very good noise isolation performance. While they don't have active noise cancelling, their foam ear tips provide solid noise attenuation at higher frequencies, limiting distractions from babies crying and PC fans. That said, they have little impact on engine rumble in planes and buses. The earbuds don't leak much audio, but someone with good hearing seated close to you in a quiet environment might hear a little bit of your audio if you have it cranked up to max.
The Sony INZONE E9 don't have a microphone.
The Sony INZONE E9 have good frequency response consistency. The earbuds come with four sizes each of silicone and foam ear tips, giving you many options to find the right fit and achieve a consistent seal. If you take the time to adjust their fit each time you wear them, you'll enjoy a consistent listening experience.
Performance Usages
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Differences Between Sizes And Variants
The Sony INZONE E9 come in 'White' and 'Black' versions. We tested the 'White' version and took a photo of the label. If you encounter another variant, please let us know in the comments, and we'll update the review.
Popular Headphone Comparisons
The Sony INZONE E9 slot into the wired-earbud spot of the brand's gaming lineup alongside the Sony INZONE H9 II, Sony INZONE Buds Truly Wireless, and Sony INZONE H6 Air. Each offers unique advantages, depending on your needs. The E9 are small and lightweight and don't require a battery or charging, but they sacrifice the potential for deeper customizations and active noise cancelling available on the actively powered H9 II and Buds. Meanwhile, the H6 Air are the open option among the INZONE audio products, giving you a more spacious feeling listening experience. It's also worth noting that the E9 are the only entry that don't have a microphone.
Similarly, the SteelSeries TUSQ have an integrated boom mic while still offering a wired-only earbud design. But they come with fewer ear tips than the Sony, and don't have a USB-C adapter for use with smartphones or other devices without an AUX port. If you're looking for more options, check out our recommendations for best gaming headsets, best earbuds for gaming, and best audiophile headphones (which often excel for gaming if you don't need a microphone).
The Sony INZONE H9 II are wireless, closed-back gaming headphones with active noise cancelling, while the Sony INZONE E9 are wired-only in-ear monitors. The H9 II block out low-frequency rumble and construction noise better, but don't handle voices or PC fan whir as well. Even so, their wireless design is more convenient for many, and they have a boom mic while the E9 have no microphone option at all. The H9 II also have more app-controlled features and physical controls for a variety of functions.
The SteelSeries TUSQ and Sony INZONE E9 are both wired gaming earbuds. The SteelSeries are the better option if you need a microphone, since they have a built-in boom mic that reproduces your voice quite naturally. However, they don't have detachable cables or as many sizes and material types for ear tips as the Sony, making it harder to find the perfect fit for you. Plus, the Sony's foam ear tip options give you better passive noise isolation against high-frequency noise, like chatty roommates or noisy children.
The Sony INZONE Buds Truly Wireless and Sony INZONE E9 are both in-ears, but one is wireless while the other is wired. The wireless INZONE Buds have on-board active noise cancellation, which provides you with better reduction of bassy noise like engines. However, the INZONE E9 have a solid in-ear seal thanks to their foam ear tips, so they reduce more high-frequency noise like children crying. That said, the INZONE Buds have an integrated mic and capacitive touch controls, along with a USB-C dongle for wireless connectivity. The INZONE E9 don't have a mic, so you'll need to use a dedicated one for in-game comms.
The Sony INZONE H6 Air and Sony INZONE E9 are different gaming audio solutions. The H6 Air are open-back over-ears with a dedicated boom microphone, making them better suited for gaming in a controlled environment where background noise won't distract you. On the other hand, the E9 are better if you prefer lightweight earbuds that aren't as bulky. They don't have a microphone, though, so you'll need a separate mic to communicate with friends on Discord. Both headphones are wired-only designs, so make sure you're okay with cables before buying either.
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