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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-23 · 7 min read · Independent comparison
• SWDSTP Personal — biggest strength: a genuinely pocket-sized FM radio with DSP tuning, a 64–108 MHz range, 20 station presets and an LCD display, plus a pair of stereo headphones with a volume slider in the box.
• SWDSTP Personal — biggest trade-off: there is no speaker at all. You must wear headphones to hear anything, it runs on two AAA batteries that aren't included, and it isn't water resistant.
• YDYBZB KPH7 — biggest strength: ten black foam cushions (five pairs) that fit the Koss KPH7, in a soft, breathable foam that's meant to cut pressure on your ears over long sessions.
• YDYBZB KPH7 — biggest trade-off: it isn't a listening device. It's a consumable spare part. If you don't own a Koss KPH7, this does nothing for you.
• Buy SWDSTP Personal if you want a tiny radio for walking, jogging or emergency listening with your own earbuds.
• Buy YDYBZB KPH7 if you already own Koss KPH7 headphones and want fresh, comfortable pads without replacing the whole headphone.
The SWDSTP Personal is a single-purpose device: a pocket FM radio. Its tuning is digital, driven by DSP circuitry that the spec sheet credits with better sensitivity and signal clarity, and it covers 64–108 MHz — a wider low end than the standard FM band, which some listeners care about. You get an LCD display, 20 storable presets that can be saved automatically or manually, and a stated stereo separation of ≥32 dB through the earbuds.
The physical package is what sells it. It measures roughly 3.1 x 0.8 x 1.1 inches and weighs under an ounce, so it disappears into a pocket, a purse or a backpack. There's a detachable belt clip in the box, along with the headphones, a lanyard and a manual. It runs on two AAA batteries, and one detail I like for preparedness: saved stations survive a shutdown or a battery swap, so you don't lose your presets every time you change cells. That's a real advantage if you keep one around as an emergency radio during bad weather.
Here's the honest catch. There is no speaker. This is a headphone-only radio, and the included stereo headphones have a volume control slider on the cord, so you're not hunting for buttons while you jog. It works with any 3.5 mm earphone if you'd rather use your own. It is not water resistant, so sweat-heavy workouts in the rain are a risk. And the two AAA batteries are not included.
Who should buy it? In my opinion, this fits three people well: the walker or jogger who wants news and music without a phone; the parent or grandparent who finds smartphone apps fiddly and wants physical buttons and a printed instruction sheet; and the household that wants a battery-powered radio on hand for storms. Who should skip it? Anyone expecting speaker playback, anyone who wants rechargeable internal power, and anyone who needs weatherproofing.
The YDYBZB KPH7 is a different category of product entirely, and it's important to be clear about that before comparing. It is not a headphone. It is a set of replacement foam earpad cushions made to fit the Koss KPH7 portable wired headphone. The package contains ten pieces — five pairs — in black.
The construction is the whole story. The foam is soft and designed to conform to the shape of your ear, which reduces pressure during extended wear. The breathable foam construction is meant to prevent the stuffy feeling that builds up over a long listening session, which is why the manufacturer points at daily music listening and office use as the natural scenarios. The pads measure about 2.16 x 2.16 x 0.39 inches and weigh practically nothing at 4.54 grams. There's a one-year warranty listed.
The practical value here is disposability. Foam pads flatten, absorb oil and get grimy, and on a lightweight on-ear headphone like the KPH7 they're usually the first thing to wear out — long before the driver or the cable. Buying a multi-pack means you can swap in a fresh pair whenever the old ones get uncomfortable or unsanitary, and keep the headphone going instead of replacing it. Five pairs also means you can rotate: one pair on the headphone, the rest stored clean.
Who should buy it? Owners of the Koss KPH7 whose pads are flat, hard or dirty, and anyone who shares a headphone and wants to keep the contact surface fresh. Who should skip it? Anyone who doesn't own a Koss KPH7. The compatibility is specific, and the size is built around that one headphone. If you're shopping for a complete headphone, this is not that product.
Side-by-Side: Which Should You Choose?
• Best for jogging and walking → SWDSTP Personal. The belt clip, sub-ounce weight and cord-mounted volume slider are built exactly for that.
• Best for emergency preparedness → SWDSTP Personal. Two AAA batteries, preset memory that survives power loss, and no reliance on a phone network.
• Best for keeping an existing headphone alive → YDYBZB KPH7. Five pairs of replacement foam let you refresh a Koss KPH7 instead of retiring it.
• Best for long listening sessions → YDYBZB KPH7. The soft, breathable foam is specifically aimed at reducing ear pressure and stuffiness over time.
• Best for gifting to an older parent or a kid → SWDSTP Personal. Simple physical controls, a printed guide and a 12-month exchange policy make it a low-friction gift.
• Best if you want speaker playback → neither. The SWDSTP has no speaker, and the KPH7 is a pad set. Look elsewhere.
• Best if you want zero maintenance → YDYBZB KPH7. Foam pads are inert until you fit them; the radio needs batteries you have to supply.
In my opinion, the SWDSTP Personal is the one I'd buy, and the reason is simple: it's a complete, self-contained product that does its job out of the box, whereas the YDYBZB KPH7 only makes sense as an accessory to a headphone you already own. The radio's combination of DSP tuning, 20 presets, preset memory that survives a battery change, a belt clip and a sub-ounce body is a coherent design for a specific job — pocket listening on the move. I'd only steer you to the KPH7 pads if you already have a Koss KPH7 sitting in a drawer with flattened foam. In that case they're a cheap way to bring it back. Otherwise, the radio is the purchase that stands alone.
FAQ
how to use external headphones on mac
how to connect mobile headphones
For wired headphones, plug the 3.5 mm plug into the phone's headphone jack; if your phone has no jack, use a USB-C or Lightning adapter. The SWDSTP Personal works with any 3.5 mm earphone, so you can use your own rather than the included pair. It has no Bluetooth, so it's a wired-only device.
how to connect c port headphones
USB-C headphones connect by plugging directly into a USB-C port, or via a USB-C-to-3.5 mm adapter if the headphone has a standard jack. The SWDSTP Personal uses a 3.5 mm auxiliary connection, not USB-C, so a USB-C headphone would need an adapter to work with it. The YDYBZB KPH7 pads don't involve any connection — they're foam fitted onto a Koss KPH7.
how to pack headphones
For the SWDSTP Personal, the whole point is that it doesn't need careful packing — at about 3.1 x 1.1 x 0.8 inches and under an ounce, it slips into a pocket, purse or backpack, and the detachable clip keeps it attached to you rather than buried. Coil the headphone cable loosely rather than wrapping it tight around the body, which stresses the wire over time. If you're packing a Koss KPH7, the YDYBZB foam pads are small and light enough to toss in a bag as spares.
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