Monoprice MHP 839 ( 108323 ) vs Jaybird X3

The mids are the star of the MHP 839’s sound signature. They are forward and have good clarity, making vocals and guitars sound really prominent, and gives the overall sound a distinctly warm feel.
The bass is very good. While not very forward, it is full, has good punch and comes off as quite natural.
The top highs are rolled off, which may muddle some of the music’s details. However, this also results in a smooth sound, as there is little to no harshness.

You can wear these the conventional way, or you can also choose to use these DJ style, where only one ear cup is held to the ear.

One cable is thinner and shorter which is great for mobile use. The other is longer and thicker which should work better when using the headphones indoors.

The cable is connected to the left ear cup via a 3.5mm cable, which can easily be removed. Storing the headphones or replacing a broken cable should be very easy to do.

The MHP 839 is very versatile. The sound signature is enjoyable, and can work well with a variety of genres. It also offers good passive noise isolation for studio/DJ use. The collapsible design with removable cables make it easy to bring on the go. This combination of features is rarely seen in the price range.

Exposure to splashes of rain or sweat won't easily damage these earphones.

The highs are crisp, airy and forward so detail presentation is very good. Bass is fast and controlled instead of boomy, so it does not muddy up the overall sound. The mids sound natural and do not get lost in the mix.
This sound signature works well with a wide range of genres and rock, pop, hip-hop and EDM will definitely sound great with these headphones.

The X3 comes with wing tips that you can attach to the earpieces. The tips enhance the grip of the headphones in the ear, and will help keep them secure even while you are running

The in-line remote will allow you to control music playback, adjust volume as well as answer/end calls.

Integrated into the remote is a microphone, so you do not need to pull out your phone should a call come in. Mic quality is pretty decent, and your voice should be easy to understand on the other line.

You get standard silicone ear tips in different sizes, along with a carrying case, different sized wing tips, premium Comply foam ear tips in different sizes, cable management clips as well as the charging cradle with micro-USB cable.

The older X2 model had bigger and heavier earpieces which made them prone to falling off, and also made it difficult to use the earphones with a helmet or a hat. The X3’s earpieces have been redesigned to be smaller, while the internal batteries have been moved from the earpiece to the remote. This helps keep the X3 in-place inside the ears and at the same time makes these earphones easier to fit under a hat or helmet.

The X3 gets around 8 hours of playback time from a full charge. This battery life is much more consistent compared to the previous model which had spotty battery life.

Signal quality is pretty stable with minimal distortion or drops, even if you are on the move.