Sennheiser GAME ONE PC Gaming Headset vs 66 Audio BTS Pro

You get a lot of quality for the price you pay. Sennheiser is by far the best.

The microphone ranks among the best and features excellent noise canceling which does a great job at eliminating background noises.

The open back design gives a feeling of width to the sound, which is great for movies and games. This effect is achieved without having to rely on virtual surround sound software techniques.

The GAME ONE has excellent sound quality and offers good balance between the different sound frequencies. The bass is tight and punchy instead of the overpowering and bloated low-end that most gaming headsets have.
Mids have good presence and fullness, so game dialogue should be easily heard. The highs are crisp and airy so a lot of detail can be enjoyed from games, yet the headset is not fatiguing to listen to, even with long gaming sessions.

Inside the ear pads, reasonably thick memory foam is used so they feel really soft. On the surface is high quality velour which not only feels really smooth but also allows for some airflow to the ears, minimizing heat build-up.

The BTS Pro is quite robust and can withstand some minor splashes of sweat or rain as these are sweat-proof. They are not completely water-proof though, so you should not get them soaking wet.

There is good detail in the highs and the mids can also be heard clearly with very little muddiness. The lower frequencies are boosted, resulting in a good level of depth and power to each bass thump.

The BTS Pro ear cups sit on the ears with hooks keeping them in place. The flexible connecting band provides good clamping force and can adjust to your head size with continued use. Combined with cushioning on the cups, these are comfortable to wear and will stay in place.

Bluetooth connectivity allows the BTS Pro to connect with smartphones and compatible music players wirelessly, so cables won't be an issue.

66 Audio's Motion Control iOS App gives users added functionality, including EQ control and presets selection, battery status indicator, and even headphone position tracking. These features can improve the listening experience and also minimize the chances of you losing these headphones.

With up to 40 hours of playback time at full charge, it's more than enough for most listening sessions. You won't have to charge these frequently.

A hard shell carrying case is included, which can protect the headphones from minor impact and also make transport much easier. The case also has good aesthetics.

They are easy to bring on the go as the ear cups can be folded into the headband. This further reduces the already slim and compact size, making them easy to chuck into a bag when on the go.

The right ear cup of the BTS Pro features buttons for controlling headphone features. You can play/pause tracks, increase/decrease volume as well as answer/end calls by pressing the corresponding buttons, negating the need to pull out your phone to do so.

You do not need to take the BTS Pro off in order to answer incoming calls. There is a built-in microphone which allows you to easily take or make calls in the middle of your run or workout.