OnePlus Buds 4

Design and features:
This Bluetooth wireless noise-canceling portable ear-insert models ear plug-like design and electronic noise canceling feature reduce both outside noise and sound leaking out into your environment.

Additional features:
Has integrated volume control, microphone, and call connect/disconnect control. Either earphone can be used alone for one ear monitoring of Bluetooth streamed audio and telephone communications. HeyMelody app download for Apple and Android mobile devices adds additional features and software updates.

Sound quality:
We found the Buds 4 delivers sound quality that falls in the very good range - it reproduces music and voice very well although it does have some noticeable sonic quirks and excellent active noise reduction. The bass (as in bass drums, bass guitars, stand-up bass, etc.) has good impact and deep, but is somewhat prominent and boomy. The midrange (voices, guitars, horns, etc.) is fairly even but is a bit grainy, etched (a bit more sharply outlined then it should be) and congested (think sonic traffic jam) and a touch sibilant. The treble (cymbals, the upper range of violins, etc.) is fairly extended, but is somewhat prominent and a touch sizzly (sounds that should have a delicate shimmer have a sound reminiscent of bacon frying) and smeared. The sound also has a good sense of liveliness and is somewhat open--sound-wise it almost seems like you don't have anything plugging up your ears and does a decent job of recovering room ambience mostly in the upper midrange less elsewhere. Mixed character - warmish bass with neutral midrange and coolish treble. The overall sound can be summerized as bassy, grainy, and etched. A faint rushing sound can be heard in quiet environments when there is no audio program to drown it out.

Noise Canceling:
Excellent noise reduction across the entire frequency range with the low frequencies reduced the most. Orientation changes the noise reduction characteristic - when the noise is coming from the front a bit more high frequency noise can be heard. The noise cancelling electronics do not produce any background noise that is noticeable even in low ambient noise environments.

Comfort and Fit:
As typical of in-ear models they produce a sense of pressure in the ear canal opening that might be uncomfortable for some. Small Users with small ear bowls might find that the earphone body feels bulky in their ear bowl and are mostly held in place by the section of the earphone that is inserted in the ear canal and ear bowl, but that they will stay in place during casual use and are very stable even with vigorous head movement. Medium Users with medium sized ear bowls will probably find that with or without the ear bowl supports this model stays in place with no problems for casual use and that they are very stable even during vigorous head movement. Large Users with large sized ear bowls will probably find that with or without the ear bowl supports this model stays in place with no problems for casual use and that they are somewhat stable even during fairly vigorous head movement. Hitting the stem that hangs out of the ear can knock an earphone loose and cause it to fall out of the ear.

The OnePlus Buds 4 portable Bluetooth wireless noise-canceling earphones that have a isolating ear-insert design.