Sennheiser HD 650 vs Phiaton BT 220 NC

The sound signature is near neutral but with a little emphasis on the lower frequencies. The bass is slightly forward with good punch and tightness. Explosions will have good rumble, without overpowering the other frequencies.
The mids are warm and clear, adding extra body to the sound. Game dialogue will be easy to hear.
Highs have good clarity, but are not forward in any way, so harshness is minimized.

The H650 is popular for its near neutral sound, which makes it quite versatile. The headphones can give a great casual listening, gaming, and movie watching experience yet are accurate enough for pro audio mixing. They are also lightweight and comfortable so you won't have any issues wearing them for hours.

Clamping force is not too tight. The ear pads and headband feature memory foam which are covered by velour material. The pads feel really soft on the head and allow airflow for minimized heat build-up/sweat.
The headband also features similar cushioning materials and minimizes pressure spots on the head.

The open ear cup design allows the sound to blend with your surroundings, giving it a natural width. It will also be easier to identify the direction of sounds, which can really help immersion.

The HD-650s do not feel heavy at all. They are usable for long music listening, movie or gaming sessions without feeling pain or strain on their head and neck.

While the cable connectors are proprietary, they can easily be removed from the ear cups with a firm pull. The popularity of these headphones means that there are a lot of aftermarket cables that can be bought.

You’ll have minimal issues with headphone wires. While there is a cable connecting the earpieces to the active noise cancelling module, you can eliminate the need for a cable from the module to your source device if the source is Bluetooth capable.

These headphones can block out a decent amount of ambient noise. The active noise cancelling filters out most high and mid frequency noise. To further reduce low frequency noise, you’ll want to switch the eartips to the Comply foam ones.

Should the battery run out, you can still use these headphones in wired mode. There is a micro-USB to 3.5mm cable included so you can connect the ANC module to your source device. You won’t get active noise cancelling in this mode though.

The ANC module doubles as a remote, and gives you a lot of control over phone and music functions. There is a dedicated button for answering calls, a switch to turn ANC on or off, as well as buttons for volume adjustment and play/pause.