The Shure SE425 are well-built and durable in-ear headphones. They have an ear hook design that makes them a decent option for sports and they easily fit into your pockets. They're also a bit more comfortable than typical in-ears. Unfortunately, they don't have any controls and although they've improved their sound quality over the SE315, their mid-rangy sound may still be a deal breaker for more critical listeners, especially, at their price range.
The SE425 have the same design as that of the SE315 but with slightly larger earbuds. They're stable enough to run with and have a comfortable in-ear fit thanks to their angled ear buds and the various tips types and sizes provided in the box. Unfortunately, they lack a good control scheme and although they have a great detachable cable, they don't provide an extra cable in the box like some other premium in-ears in their price range. On the upside, they're quite portable and come with a sturdy hard case that's easy to carry around on your person.
The Shure SE 425 have the same look and feel as the SE 315 but the earbuds are a bit bigger. They also have an ear-hook design and angled earbuds that better fit the contours of your ears. The cable is thick, heavily rubberized and detachable which makes them feel like premium in-ears. Unlike the SE315 they stand out a bit more with their flashier color schemes.
The Shure 425 like the 315 are decently comfortable headphones that come with multiple tip types and sizes to help you find the right fit. They're also worn like an ear-hook design, so the earbuds are shaped to fit snugly within the contours of your ears. This makes them more comfortable than typical in-ears, although if you're not a fan of the in-ear fit, they may still get a bit fatiguing after wearing them for a while.
The SE425 are portable in-ear headphones. They're a bit larger than the SE315 and most typical in-ears but they still easily fit into your pockets. They come with a good case that's also quite portable. This makes them practical and convenient to have on you at all times.
Comes with the same hard case as the SE315. It's decently portable and protects the headphones from impacts and drops as well as minor water exposure. It does add a bit of bulk to the headphones, but the case is still portable while being big enough to carry all the accessories.
The SE425 feel like premium and durable headphones. The earbuds are dense and tough enough to withstand a couple of drops without getting damaged. They also have a thick and rubberized cable that's detachable in case it gets damaged over time. This means you will most likely have the Shure 425 for a very long time. Unfortunately, the lack of an extra cable out of the box is a bit disappointing at their price range especially when compared to the Westone W40.
These headphones have a stable design that prevents them from falling from your ears. The pseudo ear hooks are flexible which fits a bit better around your ears, but the lack of stiffness means they won't be as stable as other true ear-hook designs. They're still great headphones to run with though, and unless you physically pull them out or the audio cable gets hook on something they won't fall from your ears. This makes them above-average headphones for working out, and for sports.
The SE425 are a poor sounding pair of closed-back in-ears. The have a deep Bass that unfortunately sounds boomy, an overemphasized Mid range, and a Treble that lacks brilliance and air. They have a decent distortion performance but a poor Soundstage. On the plus side, they have good imaging, and given a good fit can perform quite consistently.
Good Bass Range performance. The 425 lacks about 4db of Low-bass which is responsible for low-end thump and rumble. Bass has a tilt towards high-bass, which is overemphasized by up to 5dB. This results in a relatively well-extended Bass that sound quite boomy (The ripple in low-bass is due to coupling issues we experienced during testing).
Poor Mid Range performance. The entire response is virtually flat, but consistently overemphasized by more than 4dB. This makes the sound of these headphones quite Mid-rangy and forward.
Poor Treble Range performance. Low-treble is consistent, but over our target by an average of 3dB. Treble is relatively balanced but inconsistent. High-treble shows more than 15dB of underemphasis, taking air and brilliance out of the sound.
Excellent frequency response consistency. Given a proper seal and fit using the variety of tips that comes with the SE425, the user should be able to achieve consistent performance with these headphones each time.
Decent Harmonic Distortion performance. The overall amount of harmonic distortion is rather elevated regardless of the level. However, the increase in distortion under heavier loads is minimal, which is good.
The Shure SE425 isolate well against high-frequency noise but still struggle in loud environments. They only block noise passively with their seal, which is decent, especially if you have audio playing through the headphones, but, they won't be ideal to use on public transit. On the upside, they barely leak, which makes them great headphones to use in quiet settings or when you don't want to distract those around you.
Decent Isolation performance. The SE425 don't have active noise cancelling and isolate noise by plugging the ear canal. They do not achieve any isolation below 300Hz, which is worse than some other in-ears we have measured. However, in the Mid and Treble ranges they achieve 13dB and 47dB of reduction respectively. Both values being good.
Excellent Leakage performance. The SE425 has one of the quietest leakages we have measured so far. For all intents and purposes they do not leak below 2KHz, and above that, the level of their leakage is very low.
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