If you want a straightforward planar sound with an easy-to-understand wired setup for running, choose Letshuoer S12; if you need two sound-tuning options and a three-driver hybrid design, choose Linsoul SIMGOT EW300. For running, I’d lean toward the S12’s simpler setup, while the EW300 makes more sense if you value swapping its nozzles for a different listening style.
Letshuoer S12 vs Linsoul SIMGOT EW300 at a Glance
• Letshuoer S12: A 14.8 mm planar driver, a lightweight metal chassis, and a detachable cable; the trade-off is that its design offers no alternate nozzle tuning.
• Linsoul SIMGOT EW300: A dynamic, planar, and piezoelectric driver combination with two replaceable nozzle options; the trade-off is a more involved design if you want a simple, fixed setup.
• S12’s fit and accessories: Its package includes foam, standard, and clear tips in three sizes; you still need a secure fit for running.
• EW300’s gaming angle: One nozzle option is designed around gaming and audiovisual use; that does not make it a dedicated running headset.
• Pick the S12 if you want a single-driver planar IEM and a less adjustable listening setup.
• Pick the EW300 if you want to change between two tuning options without changing earphones.
The S12 centers on a 14.8 mm planar magnetic driver. Its listed sensitivity is 102 dB/mW, and its impedance is 16 ohms. Those figures suggest a design intended to work with portable devices as well as a DAC or amplifier, rather than requiring a complicated multi-driver setup. It is a wired in-ear model with a detachable 0.78 mm two-pin cable.
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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-09 · 6 min read · Independent comparison
I’d choose the S12 if I wanted a wired planar IEM with a relatively uncomplicated design and several tip styles to try. I’d skip it if I specifically wanted selectable tuning, wireless listening, or a headband-style headset. It has no listed noise-control feature, so it is not a way to block out the surroundings while running.
The EW300 uses three driver types in each earpiece: one dynamic driver, one planar driver, and one piezoelectric ceramic driver. Its headline practical distinction is the replaceable nozzle system, which offers two tuning choices. That makes it the more adjustable pick for someone who likes to switch sound profiles rather than settle on one fixed configuration.
The standard EW300 is wired and uses a detachable 0.78 mm two-pin cable. Its body is described as an aluminum-alloy design, and its listed impedance is 28 ohms with 121 dB sensitivity. One nozzle configuration is aimed at gaming and audiovisual use, with sound details such as footsteps intended to be easier to distinguish. That gaming focus may appeal to someone who also uses the earphones at a desk, but it is not a running-specific feature.
I’d pick the EW300 if tuning flexibility and the three-driver layout matter more to me than keeping the design simple. For running, it still needs to fit securely, and the information provided does not establish that it is more stable in the ear than the S12. I’d skip it if I wanted a single-driver planar design or had no interest in swapping nozzles.
Side-by-Side: Which Should You Choose?
• Best for a simpler driver setup → Letshuoer S12. It uses one 14.8 mm planar magnetic driver in each earpiece, rather than combining three driver types.
• Best fit for a planar-first listener → Letshuoer S12. Its design is built around a large planar driver, with listed sensitivity of 102 dB/mW and impedance of 16 ohms.
• Best fit for a hybrid-design listener → Linsoul SIMGOT EW300. It combines dynamic, planar, and piezoelectric drivers in each side.
• Best for trying different included tip types → Letshuoer S12. Foam, standard, and clear tips are included in small, medium, and large sizes.
• Best for gaming as well as music → Linsoul SIMGOT EW300. One nozzle option is described for gaming and audiovisual content, including clearer separation of sounds such as footsteps.
• Best pick to consider for running → Letshuoer S12, narrowly. Its vented, concha-shaped housing and over-ear cable arrangement look straightforward for a wired run, but neither model is specified as a sports earphone.
• Best for someone searching “kids headset for running” → neither is an obvious match. Both are in-ear wired monitors, and the available information does not describe child-specific sizing or running-focused retention.
I would buy the Letshuoer S12 for my own running shortlist. Its planar-focused design, concha-shaped housing, venting, and over-ear cable arrangement make it the more straightforward choice for a wired in-ear setup.
That is a fit-based preference, not a guarantee that it will stay secure during exercise. I’d still check the seal and cable comfort before taking it on a run. I’d choose the EW300 instead if its two nozzle tunings and gaming-oriented option were the features I cared about most.
Which is better for running, the Letshuoer S12 or EW300?
I’d start with the S12 because its stated design includes a concha-shaped housing, side vents, and a cable worn over the ear. Neither is identified as a dedicated sports model, so fit and cable movement remain personal considerations.
Both are wired, and each lists a 3.5 mm headphone connection. The S12 is also described with a 4.4 mm cable option; the EW300 listing specifies a 3.5 mm connection. Check that your device has a compatible output before choosing.
Yes, in terms of tuning: the EW300 has replaceable nozzles that provide two sound options. The S12 does not list interchangeable nozzles, though its package includes several styles and sizes of ear tips.
No. Both are wired in-ear monitors, not headband headphones. Someone searching for hifi stereo sleep headphones for running should know these products are earphones with rounded tips; the available specifications do not describe either as a sleep or headband design.
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