Sennheiser HD 650 vs Logitech G933 Artemis Spectrum Wireless 7.1 Surround Gaming Headset

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.

Thick memory foam is used in the ear pads along with a velour material on the surface which feels great on the skin. These pads are also removable and washable, making them easy to maintain.
The headband also features padding with a reasonable thickness so the top of a user's head will not feel painful when wearing these.

The mic design integrates into the left ear cup very well. If you do decide to stow away the mic and push it up, it will look like the mic is just part of the ear cup instead of being a separate unit.

Explosions can sound really good with the G933 as the bass is quite powerful. You'll be able to experience a lot of rumble and punch from the lower frequencies. Also, the upper mids and the highs are quite boosted. This gives a nice thickness and warmth to the sound.
Voices from game dialogue can be clearly heard, while audio details are clear and also easy to distinguish.

The G933 Artemis is praised for its extremely long wireless range, up to 30 feet indoors and even 40 feet outdoors. Stability is also excellent: the wireless functionality doesn't distort the audio quality at all.

The G933 is quite sturdy and has a rugged exterior, but offers good comfort for users. Build quality is also excellent, with a combination of high quality plastic and metal being used in the headset's construction. Also, the it does not have a lot of creaks or unnecessary flex.

With the surround feature activated, sound direction from their various sources is much more distinct. This can help to heighten immersion.

This headset has adjustable lighting, so you can choose a RGB-color in the software suite of the headset. You can also adjust the equalizer, surround sound settings, and you can allocate shortcuts and macro's to programmable buttons on the left ear cup.

The included 4-pole audio cable allows the headset to be used without power, with smartphones or any other device as normal headphones.