While Ultimate Ears mostly creates custom in-ear monitors for musicians and audiophiles, the Ultimate Ears FITS Truly Wireless are their only earbuds marketed for more casual use. They have a kind of customization that isn't seen in other mainstream products. These in-ear headphones have ear tips that mold to your unique ear shape, thanks to Lightform technology. There's an integrated LED light built into each bud, and the companion app walks you through the process.
The Ultimate Ears FITS are adequate for neutral sound. Out-of-the-box, they have a pretty neutral sound profile that's suitable for listening to lots of different audio genres, though sibilants like cymbals can sound a bit sharp and piercing. They also struggle to reproduce a thumpy low-bass. However, there's a graphic EQ and presets available in their companion app to help you customize their sound more to your liking.
The Ultimate Ears FITS are decent for commute and travel. They're easy to carry around and comfortable enough for long days on the go. They also last for about eight hours off a single charge and come with a portable case that holds about 1.5 extra charges. Unfortunately, they have a poor passive noise isolation performance and don't block out rumbling engines or background chatter.
The Ultimate Ears FITS are great for sports. These small, lightweight in-ears have ear tips that mold to fit the shape of your individual ears, which results in a comfortable, stable fit. They're well-built, and thanks to their in-ear design, they shouldn't make you sweat more than usual during your workouts. However, they don't have an IP rating for dust or water resistance.
The Ultimate Ears FITS are okay for office use. Thanks to their moldable ear tips, you can get a very comfortable fit suitable for long days at the office. They don't leak a lot of audio, so you can crank up the volume without bothering your coworkers. Unfortunately, their noise isolation performance is disappointing, and their 7.8-hour continuous battery life may not last through long shifts.
The Ultimate Ears FITS aren't compatible with PlayStation or Xbox consoles. You can use them with Bluetooth-enabled PCs, but their latency is likely too high to be suitable for wireless gaming.
You can't use the Ultimate Ears FITS wired, so they aren't suitable for wired gaming.
The Ultimate Ears FITS are okay for phone calls. Their integrated microphone has a fair recording quality, so your voice is understandable but a bit thin and unnatural. The mic struggles to separate your voice from loud background noise, and the earbuds don't really isolate you from ambient sound either, so they're better suited for taking phone calls in quiet settings.
The Ultimate Ears FITS come in three different color variants: 'Grey', 'Lilac', and 'Midnight Blue'. We tested the 'Midnight Blue' variant, and you can see the label for the model we tested here. We expect our results to be valid for the other variants as well.
If you come across another version of these headphones, let us know in the discussions, and we'll update our review.
The Ultimate Ears FITS are impressively comfortable and stable, truly wireless in-ears with moldable ear tips to help get the best possible fit. Their default sound profile lacks a little low bass, but they also come with a graphic EQ and presets to help you customize their sound, which is handy. However, they don't have ANC, and their design blocks out very little noise, even compared to other earbuds that rely on passive noise isolation like the Jabra Elite Active 65t Truly Wireless.
See also our recommendations for the best truly wireless earbuds, the best earbuds and in-ears, and the best wireless Bluetooth earbuds.
Depending on your listening habits, you may prefer either the Anker Soundcore Liberty Air 2 Pro Truly Wireless or the Ultimate Ears FITS Truly Wireless. The Ultimate Ears have a more comfortable and stable fit thanks to their moldable ear tips. However, the Anker have a more neutral sound profile out-of-the-box, with a more consistent audio delivery and better noise isolation.
The Apple AirPods Pro Truly Wireless are better for most purposes than the Ultimate Ears FITS Truly Wireless. The Apple are better-built, have an ANC feature and a much better noise isolation performance, and support virtual surround sound. They also have a more neutral sound profile that some may prefer. On the other hand, the Ultimate Ears have a much more comfortable, stable fit. They come with in-app sound customization features, have a better overall mic performance, and last longer off of a single charge.
The Ultimate Ears FITS Truly Wireless are better headphones than the Apple AirPods (2nd generation) Truly Wireless. The Ultimate Ears have a more balanced sound profile out-of-the-box, and thanks to their graphic EQ and presets, they offer more sound customization options. They have better noise isolation and a more stable fit thanks to their moldable ear tips, too. However, the Apple are better-built.
The Ultimate Ears FITS Truly Wireless and the SteelSeries Arctis Pro Wireless are very different headphones, so you may prefer one over the other. The Ultimate Ears are truly wireless in-ears with a smaller, more portable design and a more comfortable, stable in-ear fit. However, the SteelSeries are gaming-oriented over-ears with a better microphone performance and built-in support for non-Bluetooth wireless. They have a more neutral out-of-the-box sound profile, and they're compatible with PS4 and Xbox One consoles.
The Samsung Galaxy Buds+ Truly Wireless are better headphones than the Ultimate Ears FITS Truly Wireless. The Samsung have a more neutral sound profile out-of-the-box and a more consistent audio delivery across different users. They isolate against more background noise, and they have longer continuous battery life. However, the Ultimate Ears are more comfortable thanks to their moldable ear tips, and they come with a graphic EQ for more sound customization.
Depending on your listening habits, you may prefer either the JBL Reflect Mini 2 Wireless or the Ultimate Ears FITS Truly Wireless. The JBL have a longer continuous battery life and a better noise isolation performance. However, the Ultimate Ears are better-built with a more comfortable fit thanks to their moldable ear tips. They also come with a graphic EQ and presets to help you customize their sound.
The JBL CLUB PRO+ TWS True Wireless are better headphones than the Ultimate Ears FITS Truly Wireless. The JBL are better-built with a more neutral sound profile out-of-the-box. They also have better noise isolation. However, thanks to their moldable ear tips, the Ultimate Ears have a more comfortable and stable fit.
The Jabra Elite 7 Active True Wireless are better than the Ultimate Ears FITS Truly Wireless for most purposes. The Jabra have ANC and a much better noise isolation performance. Their default sound profile is much more neutral, which some may prefer. Their case also holds more extra charges and they have an auto-off timer to conserve battery life. On the other hand, the Ultimate Ears have tips that mold to fit your individual ear shape, which gives them a much more comfortable, stable fit.
The Ultimate Ears FITS Truly Wireless are better headphones than the Skullcandy Dime True Wireless. The Ultimate Ears come with moldable ear tips that offer a more comfortable and stable fit. Their continuous battery life is longer, and they come with a graphic EQ and presets to help you customize their sound. That said, the Skullcandy have better noise isolation.
The Jabra Elite Active 75t Truly Wireless are better headphones than the Ultimate Ears FITS Truly Wireless. They have better noise isolation and a more consistent audio delivery across different listeners. Some users may also prefer their bass-heavy sound profile out-of-the-box. However, thanks to their moldable ear tips, the Ultimate Ears have a more comfortable and stable fit.
The Ultimate Ears FITS are truly wireless in-ears with a unique design. Their ear tips are a bit large since they're designed to mold to fit your ears for personalized comfort. The earbud is long and skinny, with an Ultimate Ears logo printed on it. They come in three color variants: 'Midnight Blue', 'Grey', and 'Lilac'.
The Ultimate Ears FITS are impressively comfortable. Using their app, their Lightform technology creates a custom fit by molding the ear tips to your ears. They're lightweight, and they don't put a lot of pressure on your ears, even when you make an input on their touch-sensitive controls. They also don't go very far into your ear canal. They're a bit bulky and stick out of your ears, which may be inconvenient for some listeners. You can only mold each pair of tips once, but you can purchase extras from the manufacturer.
Note: The image shows the headphones after they've been molded to fit our test dummy head.
The Ultimate Ears FITS have okay controls. By default, every command plays/pauses your audio, but you can use the companion app to add a few other functions, including track skipping and volume control. You can also add a voice assistant function, although it has to be assigned a double tap on one of the earbuds. However, you can't remap the call-related controls.
The touch-sensitive controls are generally easy to use, although sometimes commands don't register on your first try. Fortunately, you hear different tones for a double tap and a single tap, making it easy to know when a command is registered. You also get audio feedback when they connect with or disconnect from a device and when you hit maximum and minimum volume. However, they use the same chime for max and min volume, which could be a bit confusing.
On either earbud:
The Ultimate Ears FITS are fantastically portable. Their truly wireless design is small and lightweight, and they'll easily fit into your pockets. They also come with a small carrying case that will likely fit into most pockets or bags.
They come with a decent case. It's small enough to fit in purses and pockets and has a button inside it for Bluetooth pairing. The silicone interior has a nice feel, but unfortunately, the outside of the case is really prone to collecting fingerprints, and the lid feels thin.
The Ultimate Ears FITS have a good build quality. They're mostly made of silicone-like plastic that feels solid and durable. Unfortunately, the case collects fingerprints. The earbuds aren't rated for dust or water resistance either, which is disappointing since many Βluetooth earbuds that we've tested are rated at least IPX4 for resistance against minor water exposure.
These headphones are impressively stable. Though they stick out of your ears a bit, they're more stable than some sports-oriented earbuds like the Jabra Elite 7 Active True Wireless and easily stay in place during workouts. They may accidentally register commands if you're shaking your head intensely. If that becomes an issue, you can choose to turn off the single tap, double-tap, or both commands using the companion app.
The Ultimate Ears FITS have a pretty neutral sound profile. They lack a bit of low-bass, so you don't feel the deep thump and rumble in bass-heavy genres like EDM, but there's a little extra warmth and boom in the high-bass that some listeners may enjoy. Vocals and lead instruments are pretty clear and present in the mix, though sibilants like S and T sounds can be honky and harsh. There's also a graphic EQ and presets available in the Ultimate Ears Fits companion app to help you customize their sound.
The Ultimate Ears FITS have okay frequency response consistency. There's some inconsistency in the bass and treble delivery, so depending on their fit, seal, and positioning on your head, they may sound a bit different each time you use them. They're a bit difficult to test since they're molded to fit our dummy head's ears. We also can't subjectively confirm our results with this unit. We believe they perform a bit more consistently than this test is showing, and the results may be a result of an issue with our dummy head.
The Ultimate Ears FITS have good bass accuracy. Even though the tips are molded to your ears, which will help create a good seal, they still lack a bit of low and mid-bass, so you don't hear the deep thump and punch in genres like EDM. There's a small bump in the high-bass that brings some extra warmth to the mix, though.
The Ultimate Ears FITS have decent treble accuracy. The underemphasized low-treble can hurt the comprehensibility of vocals and lead instruments slightly. The overemphasized mid-treble adds harshness to sibilants like S and T sounds, making some vocals, like Jisoo in the first verse of You Never Know by BLACKPINK, seem a bit piercing.
The Ultimate Ears FITS have mediocre peaks and dips performance. There's some frequency mismatch between the left and right drivers, especially in the low-bass range, so your audio may lack some rumble in one ear and have a little extra in the other. There's also a peak in the high-bass to low-mid ranges that can add a boomy quality to the mix, which slightly muddies vocals and lead instruments. The dip in the mid-mid nudges those same instruments slightly towards the back of the mix. The peak in the mid-treble makes sibilants like cymbals very harsh and piercing.
The Ultimate Ears FITS have a great imaging performance. Their weighted group delay falls below the audibility threshold, resulting in a tight bass and transparent treble. The L/R drivers of our unit are well-matched in amplitude response, which helps to accurately place and localize objects like footsteps and voices within the stereo image. The drivers have a mismatched phase response affecting mid-bass to mid-mid frequencies. It can create inaccuracies in the stereo image, but it's hard to hear with regular content. There's a bit of frequency mismatch, which can also cause 'holes' in the stereo image at certain frequencies. Imaging can vary between units and can indicate a manufacturer's quality control and ergonomics.
Like most truly wireless in-ears, these headphones have a bad passive soundstage performance. Due to their design, they don't interact with the outer ear, which is one of the key factors in creating a large and out-of-body soundstage. Audio seems like it's coming from inside your head rather than from speakers placed around you. The soundstage also seems more closed-off than that of most open-back headphones.
The Ultimate Ears FITS have a good weighted harmonic distortion performance. There are a couple of small peaks in the treble range at normal volume levels, but it shouldn't be very noticeable. All frequencies otherwise fall within good limits, resulting in clear and pure audio reproduction.
These are the settings we used to test these headphones. Our results are only valid when using these settings.
The Ultimate Ears FITS have a disappointing noise isolation performance. Even though the tips are molded to your ears, and the manufacturer advertises the earbuds to have a strong passive noise isolation performance, they don't do a good job of blocking out rumbling engines or ambient chatter. They do a decent job of cutting out high-pitched noise like a humming computer fan.
The Ultimate Ears FITS have an incredible leakage performance. They don't leak a lot of audio, and escaping sound is thin. If you're listening to audio at a high volume, it shouldn't really bother those around you unless you're in a very quiet setting like a library.
The mic has a passable noise handling performance. Your voice is understandable if you're calling from a moderately noisy environment. However, background noise is also audible, and your voice may be drowned in a loud setting like a busy subway station.
These headphones have an adequate battery performance. They last for about eight hours off a single charge, and the case stores about 1.5 additional charges. You can use one earbud while the other charges in the case, which is convenient in a pinch, and they recharge quickly. However, please note that battery life can vary with real-life usage.
The Ultimate Ears FITS Truly Wireless have a great app. You can use it to mold new ear tips to your ears and test their fit. You can only mold each pair of ear tips once, but you can buy extras from the company without buying a new pair of earbuds. The app also lets you remap the onboard controls and includes a graphic EQ and presets for sound customization.
The Ultimate Ears FITS have an okay Bluetooth performance. They don't support multi-device pairing, which can be inconvenient if you often switch between using your phone and computer. They have low latency with iOS and Android devices, so you can watch a video on your phone without worrying about audio syncing issues. Unfortunately, their latency with PCs is high, so if you take a video call on your computer, your audio and video may be out of sync. They also support the aptX codec for high-resolution audio but still have high latency when you use it.
These earbuds work with Bluetooth-enabled PCs but can't connect any other way.
The Ultimate Ears FITS charging case stores around 1.5 extra charges. You can charge the case using the included USB-C to USB-A cable, but it doesn't support wireless charging.