Brainwavz Delta vs 66 Audio BTS Pro

These earphones produce a punchy sound with a good level of detail. The bass is not overpowering, but instead is fast and controlled with good depth. The mids sound natural, while the highs sound airy without getting harsh. These should sound good for all genres of music.

For a $20 pair of earphones, these are built incredibly well. The earpieces are made out of metal which makes them quite durable and resistant to damage. The cables are soft and flexible, and shouldn't break easily.

It's easy to unpack the Delta. Just open the box and there they are.

This set can be used for talking on the phone.

These come with 3 sets of silicon tips and 1 set of foam tips. The big selection of tips play a role in the notoriously comfortable fit provided by these buds.

Most earbuds have microphonics, where the movement of attached wires can cause unwanted noise that can drown out music.Surprisingly, these buds have no microphonics whatsoever.

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.