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630: 3.5mm detachable, mesh pad material, uses regular 2.0 stereo. cable has a lock feature. Cord is relatively cheap and looks to be able to tangle up fairly easy, same build quality as others, Omni directional boom mic that is not adjustable, mic is of fairly good clean quality for a gaming headset,
650: USB attached cable with RGB. Uses mesh pad material, Has 7.1 Virtual surround sound, fairly good quality cable that doesn’t appear to tangle as easy and is stiffer, same build quality as others, Omni directional boom mic that is not adjustable, mic is of same sound quality,
670: Wireless has 7.1 virtual surround sound, uses leatherette pad material, 25 hours battery life, has a different headband material and design and appears to be more bendable(questionable may be the same as the others on this) uses the same material as pads, same build quality as others, omni directional boom mic that is not adjustable, mic is of same sound quality,
Let’s get the big things here out of the room. 7.1 is bit of a joke in my opinion(I know that sounds harsh just hear me out), its a way to bring up the price for really no reason and tends to create artificial sound environments as well as improper sound placements in game while it helps in some cases it can be a slap in the face in others. You can just buy a seperate cheapo dongle for 7.1 or download dolby atmos or hesuvi for practically nothing giving you the same software so for $30 more this isn’t worth it just for the 7.1 the other big one is that the 670 is wireless this also becomes relatively pointless as outside of the difference in pads the 630 can turn into a wireless headphone by using a 3.5mm bluetooth dongle which will run at a very cheap price point.
So, the biggest selling point on that 630 is not only is it cheap but it can make use of V-moda boom pro as well as a 3.5mm bluetooth dongle making it quite something. I haven’t gotten around to sitting with it myself and can only go based on what I hear. These headphones are still based on the Takstar pro 82, much like hyperx does with its brands of clouds. Comfort level is pretty solid across the board and people have subjectively said that the 650 is of a different tuning though I doubt this is the case since they also mentioned the 630 was too quiet which leads me to believe they just didn’t have enough drive power and were using a very bad codec. There does appear to be more emphasis on bass frequency with this cooler master making me more inclined to think this is more of an all rounder headphone instead unlike the mh751 which isn’t so much as a bassy but more of a neutral bright with a respectable soundstage. It appears to be a budget friendly option to the mh751 so I won’t rule it out as being bad as multiple people have said it’s very similar in sound performance.
So my thoughts on it? Not a bad choice if you want to really have a good sounding budget gaming headset with a fairly surprisingly good sounding microphone. I would skip the 670 honestly as it’s more expensive for $60 more for very little reasoning outside of niche extra options but the other two? Well, if you are okay with usb, want to spend a bit more due to the connectivity, want some rgb, and want to skip searching for external software or dongle for your 7.1 then I think its a safe option to go with the MH650 otherwise save the extra small bit of money and just pick up the MH630. These have a bigger driver than the mh751 too which is surprising that they are at a cheaper market in comparison.
As for adding it to this list? I will wait to get a more indepth look at it myself before I consider it. Gaming headsets as it is are already hard to even recommend in the more audiophile sense as they tend to have big drawbacks in sound quality, especially when you go wireless.