Koss PortaPro vs Bragi Dash

The drivers may be small and thin, but there is good bass presence.. The mid-range may not be the most detailed, but there is a smoothness to it that gives the sound a warm and pleasing quality. There is a slight roll-off to the high frequencies yet detail and extension is still good . Overall, these headphones can give a fun listening experience that can work well with all genres of music.

Koss provides a lifetime warranty for these headphones.

The ear cups can be folded into the headband. This further reduces its already slim design into something that is much more compact. When folded down, these headphones can easily fit in small bags.

The headband can easily be adjusted to fit a user's head. The assembly features sliding metal pieces which can easily be set to fit small to large heads.

Aside from headband adjustment, users can also adjust the clamping force of the ear cups using the Comfort Zone system. This changes how secure the ear cups attach to the headband, which results in either a loose or tight clamp.

These are eye-catching headphones because of their retro design. The unusual shape of the driver case and the blue accents definitely make these look unique.

These headphones may look thin and flimsy, but are actually much more durable than their look suggests. The headband is made out of metal and can take some flex without snapping. The plastics used also exude a quality feel.

When used on the go, these headphones get extra protection from the included carrying pouch. This pouch looks simple and is made out of pleather, which should protect these headphones from scratches.

The IPX7 certification means these can work even when used while swimming. Do note however that increased water pressure (like when diving) can still cause damage.

The highs and mids have good detail but are not forward or boosted. Instead, they have a smooth quality to them that makes them easy to listen to. Bass quantity is pretty high, and with good power too.

The Dash features 4GB of internal memory. This allows the earbuds themselves to hold up to 1000 songs, which can be played without connecting to a music player or smart phone.

Users can make taps or swipes on the Bragi Dash's touch-sensitive areas on the earpieces. This can help to play or pause music, skip current track or play previous track, control volume as well as other functionality.

With these earbuds synced with the Bragi companion app, users can track fitness-related stats like heart rate, distance traveled and the like.