If you want a lightweight wired on-ear headphone with an in-line mic and remote for cycling, choose Koss KPH30i; if you need an open-back design with a stainless steel headband, choose Koss KPH40. Neither is waterproof, so I would not treat either as a weatherproof cycling headphone. The KPH30i is the more practical pick for calls and playback controls; the KPH40 makes a stronger case if its open-back construction and metal headband matter more to you.
• Koss KPH30i strength: Its in-line microphone and remote handle calls and basic playback controls. Trade-off: The corded design has no noise control.
• Koss KPH40 strength: It pairs an open-back, on-ear design with a stainless steel adjustable headband. Trade-off: Its included 3.5 mm utility cord still makes it a wired headphone.
• KPH30i suits: Listeners who want a lightweight wired option with a mic and remote in one cable.
• KPH40 suits: Listeners who prefer an open-back design, soft foam cushions, and a stainless steel headband.
The KPH30i is a lightweight, portable on-ear headphone with an adjustable headband and a wired 3.5 mm connection. Its dynamic drivers are rated at 60 ohms, with a stated frequency range of 15 Hz to 25 kHz. Those figures describe the headphone’s specifications; they do not, by themselves, guarantee a particular listening experience. The practical distinction is that this model includes an in-line microphone and remote, so calls and basic track controls are part of its wired setup.
That cable is a useful feature if you want to pause or skip music, or answer and end calls, without reaching for your connected device. Koss also describes the cord and plug as rugged, with spring-reinforced strain relief. That construction is relevant for a portable headphone that may be packed and unpacked often, though it does not make the cord indestructible. The patented suspension is designed for personalized comfort during extended use, and the lightweight build should appeal to someone who wants less bulk on their head.
For cycling, the KPH30i has a practical advantage over a headphone without an in-line microphone and remote: those controls and call functions are built into the cable. But it remains a wired, on-ear model, and the listed features do not include waterproofing or noise control. I would not buy it for wet-weather use or assume it will block traffic sounds. It may be relevant to someone searching for over ear headphones for cycling, but the KPH30i is on-ear, not over-ear; that distinction matters when choosing a fit.
How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-21 · 8 min read · Independent comparison
Who should skip it: Skip the KPH30i if you need waterproof construction, noise control, or an over-ear fit.
The KPH40 comes with a 3.5 mm utility cord and uses a detachable-cord system. The included cord gives it a straightforward wired connection, while the detachable design may suit someone who values being able to separate the cord from the headphones. The supplied information also describes USB-C, 3.5 mm, and Bluetooth connections through utility cords, including a USB-C cord with a built-in DAC. Those are cord-based connection options, not a claim that the headphones themselves are wireless. The listed included cord is 3.5 mm, so check which connection setup you need before choosing it.
An open-back, on-ear design can be a better match for someone who does not want a closed-off listening feel, but the product details do not promise isolation from surrounding noise. That is an important point for cycling: hearing the environment may matter, yet no headphone should be treated as a substitute for attentive riding. The stainless steel headband is a clear design difference from the KPH30i’s described lightweight construction, while the foam cushions provide another detail to consider for comfort.
Who should skip it: Skip the KPH40 if you specifically need an in-line microphone and remote, waterproofing, or noise control.
• Best for an in-line mic and remote → Koss KPH30i. Its cable includes a microphone and controls for calls and playback.
• Best for an open-back design → Koss KPH40. Its open-back construction is a defining feature, though it does not provide noise control.
• Best for a stainless steel headband → Koss KPH40. The adjustable headband is made of stainless steel.
• Best for a stated 15 Hz to 25 kHz frequency range → Koss KPH30i. The KPH40 lists 20 Hz to 20 kHz; those ranges are specifications, not a complete measure of sound quality.
• Best for a detachable utility-cord setup → Koss KPH40. It includes a 3.5 mm utility cord and is described with a detachable-cord system.
• Best for calls using the headphone cable → Koss KPH30i. Its in-line mic and remote are explicitly described for calls and playback functions.
• Best for soft foam ear cushions → Koss KPH40. Foam cushions are listed as part of its design.
• Best for cycling when choosing between these two → Koss KPH30i for cable controls, or KPH40 if the open-back design is your priority. Neither listing specifies waterproof construction, and both are wired on-ear headphones.
Buying Considerations
For cycling, do not read either product’s audio specifications as a safety feature. Both are wired and on-ear, and neither product sheet lists waterproofing or noise control. The KPH40 is open-back, but that description alone does not establish how much of the surrounding environment you will hear in a particular situation. Consider whether headphones are appropriate for your route and riding conditions, and keep awareness of traffic and other hazards central.
Comfort is personal, even when a design is intended for extended use. The KPH30i has a patented suspension designed for personalized comfort, while the KPH40 combines soft foam cushions with an adjustable stainless steel headband. The product information does not provide a fit guarantee or detailed sizing measurements, so those features can guide your shortlist but cannot promise how either will feel on your head.
If you are shopping for kids headphones for cycling, these product details do not establish that either model is specifically designed for children. Both are described for adults, and neither listing supplies child-specific safety or fit information. The KPH30i’s cable controls may be useful for everyday listening, but a mic and remote do not make it a safer riding choice. I would focus on fit, the riding environment, and whether headphones are suitable for the child’s route before choosing either.
Finally, neither is a candidate for the best waterproof gaming headphones for cycling: the supplied specifications do not identify either as waterproof, and neither is presented as a gaming headset. If gaming or wet-weather protection is central to your decision, look for those features explicitly rather than inferring them from a wired connection or a rugged cord.
In my opinion, I would choose the Koss KPH30i for cycling if I had to pick between these two: its in-line mic and remote give the cable a useful everyday role.
The KPH40 is the better fit for someone who specifically wants an open-back design, foam cushions, and a stainless steel headband.
Neither has listed waterproofing or noise control, so I would not choose either for wet-weather protection or sound isolation.
My recommendation is the KPH30i for cycling only when a wired on-ear headphone is appropriate for the ride and conditions.
FAQ
Both are described as wired headphones with a 3.5 mm connection or included 3.5 mm cord. The KPH40’s utility-cord options do not mean the headphones themselves have standalone wireless Bluetooth operation.
The KPH30i is the model whose supplied details specify an in-line microphone and remote, including call and playback functions. The KPH40’s listed features do not specify an in-line microphone.
The specifications do not establish that one will sound better to every listener. Both use 60-ohm dynamic drivers and list a 25 kHz upper frequency, while their stated lower limits differ; the KPH40 is also open-back. Those details help describe the designs, but they are not a definitive quality ranking.
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