The Sony WI-C300 are average wireless in-ears for most use cases. They have a simple and easy-to-use design, although their control scheme doesn't have the best feedback. They're compact enough to fit in your pockets and sufficiently stable for running, which makes them a good option for sports. They also sound moderately well-balanced, although they won't be ideal for more critical listeners. Unfortunately, they have a weak build quality that doesn't feel as durable as some of the other in-ears in their price range. They also have a slightly bulky module on their cable which may be bothersome for certain listeners.
The Sony WI-C300 have a very simple wireless in-ear design. They have small in-ear buds that are comfortable to wear, moderately stable, and very breathable. This makes them a good option for sports and running. They also have a fairly simple control scheme, and they're compact enough to easily fit into your pockets so you can have them on you at all times. Unfortunately, their in-line remote is not the easiest to use due to the flat buttons with mediocre feedback, and their overall build quality feels a bit cheap and not very durable. They also do not come with as many tip sizes to help you find the right fit. They don't have a case, and they have a bulky module on the back of the cable which can be a bit bothersome when working out.
The Sony WI-C300 have a basic wireless in-ear design. They have small earbuds that look a bit cheap and a thin cable that has an additional compartment to house the battery. They look fairly similar to the Mee audio M9B, except for the extra module, which some may prefer as it reduces the size of the in-line remote. Unfortunately, this design choice won't be for everyone, but on the upside, they come in a couple of color schemes to match your taste.
The Sony WI-C300 are lightweight in-ear headphones with a decently comfortable fit. The earbuds are very small and do not have many points of contact with the outer parts of your ear canal like conventional in-ears, which makes them a bit less fatiguing to wear for long listening sessions. However, they do not come with as many tip options as some of the other in-ears we've tested like the 1More Triple Driver or the Mee audio M6 Pro, which could have improved their overall comfort level. Also, they have a rather bulky module on the back of the cable which will bounce up and down when working out or running, (unless tucked into a shirt) which may be a bit bothersome.
These headphones have a simple 3 button set up that's decently easy to use but does not provide the best feedback. They deliver all the necessary functions; track-skipping, call/music and volume controls. Unfortunately, the buttons do not have much travel and are quite flush with the in-line remote, which makes them a bit difficult to find by touch alone.
The Sony WI-C300 have good breathability. They do not touch any parts of your outer ear, so they will not make your ears warmer than usual. They're also a bit smaller than typical in-ears, so they barely cause any temperature difference even during more strenuous activities. They're a good option for sports and working out.
The Sony WI-C300 are portable headphones that will easily fit into your pockets. Their earbuds are smaller than typical in-ears, but they have an additional module on their cable that makes them slightly bulkier than some of the other wireless in-ears we've tested like the Jaybird Freedom. Unfortunately, they also do not come with a case.
The WI-C300 have a mediocre-at-best build quality with thin cables. The earbuds are lightweight but look a bit cheap. The in-line remote feels a bit plasticky, and the audio cables are thin and not as rubberized as more premium in-ears. The cable is also not removable so they won't last as long as some of the more high-end in-ears we've reviewed so far.
The Sony WI-C300 have decently stable wireless in-ear design but do not come with any additional stability tips. They also have a fairly bulky module on their audio cable that bounces around if not tucked under your shirt. It pulls slightly on the earbuds making them a bit less stable than other wireless in-ears with a similar design. They will be stable enough for running but may occasionally slip out of your ears during more strenuous workouts.
The Sony WI-C300 is a mediocre sounding pair of closed-back in-ear headphones. They have a good and punchy bass, an even mid-range, and a well-balanced treble. However, their bass lacks quite a bit of thump and rumble, sounds a little boomy, and is prone to inconsistencies across re-seats. Also, their mid-range sounds a bit cluttered and their treble is on the bright side and rather uneven. They won't be the ideal headphones for vocal-centric music but would be decent for bass-heavy genres or podcasts/audiobooks.
The bass of the Sony WI-C300 is good. LFE (low-frequency extension) is at 41Hz, which is good. However, low-bass which is responsible for the thump and rumble common to bass-heavy tracks is lacking by 5dB. Mid-bass, responsible for the body of bass guitars and the punch of kick drums is within 0.3dB of our target, but with a tilt favoring higher frequencies. High-bass, responsible for warmth, is overemphasized by more than 4dB. This makes the overall sound noticeably boomy and muddy.
The mid-range is great. The overall response is quite even and decently balanced. The 3dB bump in low-mid is actually the continuation of the high-bass overemphasis. This tends to thicken the vocals a bit and add some clutter to the overall mix. Mid-mid is quite well-balanced, but high-mid is slightly overemphasized. This could make the mid-range a bit forward.
The treble range performance is good. Low-treble is even and flat but overemphasized by more than 2.5dB. This brings a bit of excess brightness to the overall sound. Mid-treble is relatively uneven. The dip around 8KHz could make some sibilances (S and Ts) a bit lacking, and the peak around 10KHz could make some other sibilances noticeably sharp.
The frequency response consistency of the Sony WI-C300 is about average. If the user is able to achieve a proper fit and an air-tight seal using the assortment of tips that come with the headphones then they should be able to get consistent bass and treble delivery every time they use the headphones. However, it seems these in-ears are more sensitive to placement than usual and if they are not positioned deep enough in the canal, the user may experience a drop in bass.
The imaging performance of the Sony Sony WIC300 is decent. Weighted group delay is at 0.16 which is very good. The GD graph also shows that the entire group delay response is below the audibility threshold. This suggests a tight bass and a transparent treble reproduction. However, our test unit showed an audible level mismatch between the L/R drivers, which skews the stereo image and makes one side heavier.
It should be noted that this mismatch could be unique to our test unit and the one you buy may not have this issue. However, this could be considered as a metric for manufacturing tolerance of these headphones.
The soundstage is poor. This is because creating an out-of-head and speaker-like soundstage is largely dependent on activating the resonances of the pinna (outer ear). The design of in-ears and earbuds is in such a way that fully bypasses the pinna and doesn't interact with it. Also, because these headphones have a closed-back enclosure, their soundstage won't be perceived to be as open as that of open-back earbuds like the Apple AirPods, Google Pixel Buds, or the Bose SoundSport Free.
The harmonic distortion performance is mediocre. The amount of THD produced in the bass range is within good limits. Additionally, for the most of the spectrum the THD at 100dB SPL is lower compared to the 90dB SPL. This could be due to the increased flexibility of the driver under heavier loads. The amount of harmonic distortion in the mid-range though, is a bit elevated, which could make the sound a bit impure.
The Sony WI-C300 have a mediocre-at-best noise isolation performance which will not be enough for very loud and noisy environments. They will let the rumbling noise of a subway or train seep into your audio. On the upside, they barely leak even at high volumes so you can mask some of the ambient noise by just turning the volume up and not distract the people around you.
The Sony WI-C300 have a mediocre isolation performance. In the bass range, where the rumble of bus and airplane engines sit, they achieve about 1dB of isolation, which is barely noticeable. In the mid-range, important for cutting out speech, they isolate by more than 14dB, which is above-average. In the treble range, occupied by sharp S and T sounds, they isolate by about 42dB, which is excellent.
The leakage performance is great. Similar to most other closed-back in-ears, these headphones don't leak in the bass and mid ranges. The significant portion of their leakage is in the treble range and between 3KHz and 6KHz, which is quite a narrow range. The overall level of the leakage is not loud either. With the music 100dB SPL the leakage at 1 foot away averages at 28dB SPL and peaks at around 48dB SPL, which is just below the noise floor of an average office.
The in-line microphone of the Sony WI-C300 has a sub-par quality. In quiet environments, speech recorded or transmitted with this mic will sound full-bodied, but quite muffled and lacking in detail. They are also prone to pops and low-rumbling noises, and won't be the ideal choice for making calls. In noisy environments, they will struggle to separate speech from background noise even in moderately loud situations, like a busy street.
The microphone has a sub-par recording quality. The bump in low-bass makes this mic prone to pops and low-rumbling noises. The rest of the response in the bass range is not too bad, so voice will sound relatively full-bodied. The HFE (high-frequency extension) of 2.1KHz is quite poor and results in speech that is muffled and lacking in detail. It also negatively affects the intelligibility of speech.
The microphone is mediocre at noise-handling. In our SpNR test, they achieved a speech-to-noise ratio of 14dB, indicating they are best suited for quiet environments and will struggle to separate speech from ambient noise in moderate and loud situations.
The Sony WI-C300 have a decent battery life of 8 hours but poor power saving features and no app support. They last long enough for a full day's use if you take frequent breaks. Unfortunately, they do not automatically power down to save power which is a bit disappointing. They're also not compatible with the Sony| Headphones Connect app which makes them less customizable than some of the other wireless in-ears we've tested like the Jaybird X3.
These headphones have a decent 8-hour battery life but do not have a lot of power saving features. You can't use them while they are charging, they have no auto-off feature once connected to a Bluetooth source, and no passive playback since they are Bluetooth only headphones. On the upside, they charge decently quickly at 1.7 hours.
The Sony WIC300 headphones do not come with a compatible app for added customization options.
The Sony WI-C300 are Bluetooth-only headphones with no audio cable or base/dock. They have a decent wireless range but do not support simultaneous multi-device pairing or NFC. Unfortunately, they also have a poor latency performance so they won't be suitable for watching videos or gaming.
The Sony WI-C300 do not have multi-device pairing but do support NFC. Their hold-to-pair procedure is also not too difficult to use or not as frustrating as some Bluetooth headphones we've tested.
The Sony WI-C300 are Bluetooth-only headphones with no wired option. If you want a decent sounding, wired design with a universal in-line remote, then check out the 1More Triple Driver In-Ear.
These in-ear buds do not have a dock. If you want a headphone that's versatile and has a dock, try the SteelSeries Arctis 7. However, it won't be as compact and easy-to-carry around on your person.
The Sony WI-C300 have an average wireless range, even when the Bluetooth source was obstructed but they are not as far-reaching as some of the other wireless in-ears we've tested like the BeatsX. They should have enough range for most use cases, especially if you keep your phone on you, but they won't be ideal for very large office spaces and fixed Bluetooth sources like a PC or TV.
Disappointing latency performance. The Sony WI-C300 have about 237ms of latency which is on the high side of most Bluetooth headphones making them even less suitable for watching movies and gaming.
The Sony WI-C300 are a basic wireless in-ear decent enough for most use cases. They have moderately balanced sound, a decent battery life and wireless range, and a simple design that's easy to use but doesn't have the best feedback. They're also a bit more comfortable than typical in-ears thanks to their small buds. Unfortunately, they do not come with a lot of tip options, and their build quality doesn't feel as durable as some of the other wireless in ears in their price range compared below. They also do not block noise as well as more conventional in-ear designs.
The JBL E25BT are better headphones overall than the Sony WI-C300. The JBLs also have a higher-end build quality and a flatter battery module with better cable management. The E25BT also have a longer battery life and a more balanced sound with a deeper bass. The WI-C300, on the other hand, support NFC which makes them slightly easier to pair with mobile phones.
The Jaybird Freedom are better wireless in-ears overall when compared to the Sony WI-C300. The Freedom are better built and have a customizable sound that you can EQ with the Jaybird MySound app. They also have a more stable fit for sports thanks to a wider variety of tips and stability fins that you can mix and match for a more secure in-ear fit. The earbuds isolate a bit better in loud environments making them a better choice for commuting. The Sony, on the other hand, have a better continuous battery life and a standard micro-USB charging port that does require an adapter like the Jaybirds. The Freedom are the better headset overall, but the annoying charging clip might be a deal breaker for some.
The Beats X are a better all-around headset for most use cases than the Sony WI-C300. They're pricier but also have a better build and sound quality. They also have more than twice the range of the Sonys and a faster-charging battery life that's convenient. The Beats overall do everything a little better than the WI-C300. However, the Sonys could be a decent option if you're on a tight budget.
The Anker Curve are a better sports headphone that the Sony WI-C300. The Ankers have a more balanced sound quality and a longer lasting battery life at 12 hours compared to 8 for the Sonys. The Curve also have a more stable ear-hook design that's good for sports and running. Their control scheme delivers a better feedback and they have a more comfortable in-ear fit than the Sony with additional stability fins and tip sizes. They're in the same price range as the WI-C300 and would be the better option for most listeners.
The Mee Audio M9B have a similar performance to the Sony WI-C300. The M9B have a slightly better build quality with thicker cables. The earbuds are also a bit smaller so they are more comfortable to wear for long periods of time. The Sony's, on the other hand, have a smaller control scheme that doesn't offset their stability to one side of the headphones but they also have a bulky module on the back of their cable which might be a bit bothersome for some listeners. Overall the Mee audio would be a good alternative to the Sony and will be just as decent for most use cases except home theater and gaming.