66 Audio BTS Pro vs Sony WH-1000XM2

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.

The bass has good punch and control which works really well with most genres of music. The mids are slightly forward at just the right levels, which ensures that vocals can be clearly heard. The highs are emphasized and sound great with a lot of clarity and detail, especially on the upper registers.

Swiping or tapping on the right ear cup's surface can pause or play track, go to the next track or go back to the previous one and can control volume levels as well. Also, the right ear cup has more of a textured surface compared to the old MDR1000x model's smooth, leather-like surface. This makes gesture control much more accurate on the WH-1000XM2.

If you need to talk while using these, all you need to do is to cover the right ear cup with the palm of your hand. This activates Quick Attention mode which cuts off the music and amplifies voice for easy conversation. To get back to listening to music, all you need to do is to remove the palm from the ear cup.

Aside from just turning noise cancelling on or off, users can set it to Ambient Sound which offers 2 further options.Normal Mode allows some outside noise through, while Voice Mode allows voice frequencies through the noise cancelling.

The WH1000XM2 comes with a companion mobile app that allows you to easily tweak the various settings of the headphones including EQ and noise cancelling levels. The app can also take advantage of the accelerometers in your smartphone as you move, adjusting noise cancelling and audio settings on the fly to give you the optimal listening experience.

These have great noise isolating properties and can block out a good amount of sound even with the noise cancelling off. The ear cups are closed back, while the ear pads go over the ear and seal well, awhich effectively minimizes sound leakage to and from the headphones.

The ear cups can be folded into the headband. This reduces the headphones' size so that it can easily fit inside bags.

The WH-1000XM2's active noise cancelling is one of the best in the market today. With the mode activated, a significant amount of outside noise is blocked, allowing you to really enjoy your music with minimal distractions. The Bose QC 35 II slightly edges out the Sony in this aspect though.

There is a built in microphone which negates the need to remove the headphones to answer a call.

You can use these headphones wired using the detachable 3.5mm cable or you can go wireless with Bluetooth.

The internal battery can last up to 30 hours of listening to music in wireless mode with noise cancelling on. This number goes up to 40 hours in wired mode with noise cancelling activated.

This comes with a carrying case that is made from high quality materials. It should provide extra protection to the headphones against scratches and minor impacts, which are quite common when taking these while traveling.