Sennheiser PXC 550 vs SoundPEATS Q9A

The feature works really well in preventing outside noise from intruding into your music listening experience. Also, there are very little to no reports of a feeling of pressure in the ears when the feature is active.

The sound tuning of these headphones is focused on the lower frequencies. The bass is quite powerful with good sub-bass extension. Users who listen to a lot of hip-hop, dance and bass-heavy music will certainly enjoy the oomph that these headphones can give. The mids sound natural and smooth, yet the lower regions of these frequencies can be overwhelmed by the powerful bass. The highs are crisp and clear though, which prevents the sound from getting too muddy.

Soft foam and leather are used in the interior and exterior of the ear pads respectively which makes them feel really soft and smooth on the head. The same material choices can be found in the headband.

The Smart Pause feature detects if you are removing or putting on your headphones. These gestures will trigger the music to pause or play automatically.

When in wireless mode, you do not need to use buttons in order to control the functions of the headphones. The right ear cup lets you control the headphones through touch gestures. You can swipe left or right for next or previous track, swipe up or down to increase or decrease the volume or tap on the ear cup to pause or play track as well as answer or end calls.

You can set just how much noise is cancelled by the headphones, from maximum active noise cancelling, to an ambient mode which allows some sound into the headphones. You can also turn the feature off entirely.

These headphones are quite effective at preventing sound leakage, and also passively block out noise really well. This is achieved by the closed ear cup design along with the effective seal from the leather-surfaced ear pads.

You can twist the ear cups and then fold them into the headband for a smaller, more travel friendly size. In this state, it should take up a lot less space inside your bag for less hassle when used on the go.

Sennheiser offers the CapTune smartphone app which allows users to see the battery level of the headphones, adjust the headphones' EQ, and control other functions.

The case is made from a tough fabric material which should protect the headphones from minor bumps and scratches.

The bass of these in-ear headphones is pretty powerful. It has great depth and punch. Mids are full and rich so vocals, guitars and keys can easily be heard. The highs are rolled off, so sparkle on the high frequencies is not that prominent, but this also results in a smoother sound that is easier on the ears.

Due to the bass-centric sound signature, these in-ear headphones are best for hip-hop, EDM and dance genres.

These headphones will stay in place even if you get active. The combination of the lightweight earpieces along with the integrated ear-hooks mean that these headphones will not dislodge easily.

These headphones are not prone to damage due to getting wet thanks to its sweat resistance. You can run or do similar activities using these headphones with no issues. These are still not water resistant though so submerging these in water can still cause damage.

These in-ear headphones have remote function buttons built into the earpieces, along with a microphone. This means that you do not have to pull out your smartphone in order to control basic music functions or to answer/end calls.

Along with the in-ear headphones, you get a shirt clip, flexible bands for managing the headphone cable, three pairs of ear tips in different sizes along with a soft case and a pouch for easy transport of these headphones when on the go.