k712 has recessive bass tones, good for mids and highs as they are the more emphasized frequencies. Soundstage is very large but not very good on depth. Comfort is very good and pads are quite large. Build quality is on the more fragile side but is fine as long as you take care of it. Imaging has inaccuracies so be warned this can screw with some things in competitive gaming… its not terrible but its worth noting that all the k7 series has this issue. has pad swaps and can be EQ’d just fine
Hifiman sundara is a bright headphone. It has recessive bass tones like a lot of planars from hifiman but again mids and highs are fantastic. Soundstage is incredibly airy and wide with a good amount of depth. Imaging is just fine on this one… it could be better but it doesn’t compete with say a beyerdynamic headphone in this regard. Regardless, this is most likely the best bright sounding headphone in this price bracket next to a beyer but beyers don’t have this much air let alone aren’t so smooth and relaxing to listen to. bass can be fixed through the use of EQ or something like an IFI bass button.
X2HR, I am going to probably be the negative guy in this room here. This headphone isn’t good, plain and simple. It’s good for the price as you can snag one for like $80 but outside of that… the bass is flabby, uncontrolled, and quite muddy. Mids lack in terms of clarity and presence and the highs while smooth are on the grainy side. This headphone is entirely for “Fun” and nothing more. It’s imaging is decent for its price tag but nothing to write home about. Soundstage is where it excels as its very wide and has great depth. Build quality is a bit of a joke imo but still better than a shp9500. Pads are alright but wear down after a while and feel a bit on the grainier side for such cloth material. I would not ever recommend x2hr for competitive gaming… the natural bassy signature destroys footstep placement… imaging isn’t everything
for treble? if your looking for brighter? absolutely the Sundara, sundara also wins on soundstage due to its natural signature and airyness presenting a more cinema like feel to its signature.
I used all three of these for a while as a gamer as someone who has tried a well wide variety of headphones for both music and gaming. k712 was alright but the imaging really could mess with things depending on the game… in many competitive fps the sound engines are already quite poor but when you have imaging inaccuracies on top of that? it really hurts your performance. I felt it was mainly at the 9 oclock, 11 oclock, and in cases of behind and above placements where it suffered the most.
Sundara for me was… harsh. I have very bad results. I love the sundara don’t get me wrong it sounds spectacular but that is no excuse for the company skipping on quality control. I went through 3 of these before finally snagging one in my collection that was good… granted I upgraded it to the Arya’s after the Ananda’s but Sundara in terms of sound quality is nothing short of phenomenal and well worth the money if you can nail one without any issues… they are however, very power picky. I will say that if you get one of these be very careful with it… if your prone to dropping your headphones or are rough with them I will highly recommend potentially passing on a Sundara… the drivers seem quite fragile due to the natural build quality being rather cheap and my 3rd one was dropped accidentally causing the right driver go out, looked like a bad sodering when i opened it up to check. Hifiman has great products but awful quality control… they do have warranties and rma though and once the product is fixed it seems to stay good for a long long time.
X2HR for me was an enjoyable listen… at the point in time I had experience with much better headphones and I could tell immediately the headphone had quite the many issues… the bass would bloat and bleed into its mids not to mention being very muddy, mids suffered but were warm… present but not enough, and highs had this grainy tone to them while acceptable still noticeable to me. The headphones not bad at all for the price and for casual games or movies they are absolutely nice for those but for competitive gaming they are absolutely dreadfully bad… I would take the shp9500 or a mh751 gaming headset over this actually in most cases. I had to eq the hell out of it to get it respectively good enough for competitive gaming depending on the game… I see a lot of others like on reddit recommend x2hr for competitive gaming… I absolutely don’t. If you need competitive gaming but a flexible signature… grab the shp9500 and modify it… you will get more out of it and it performs a hell of a lot better. shp9500 being $50 if you shop around… you can get pad adapter rings for $10 and some pads to swap its signature to a bassy as hell one if you wish for like. $30 so it becomes $90 the same price as x2hr with a better signature and more flexibility as you can just grab velours later and use that for competitives… makes it more well rounded.
hmm, so the 660s are a bit of a monster in terms of imaging. Not the best for warzone in particular but smaller fps like apex it works quite well. It’s very mid centric and its weak spots are its very narrow soundstage, bass is lacking(if you actually check its graph you will see it lacks with recessive bass actually but this is easily fixed) and it has some slightly under neutral treble response. Overall its very balanced sounding more so if you bring the bass into the mix, alot of people use tubes to add this warmth back into the headphone. I feel that the k712 pretty much does the same attempt as its more mids and treble as well so I don’t feel this is a complimentary headphone to a sennheiser as they fit more into the same bracket… x2hr is more of a warmer sounding headphone so that would be alright and sundara is brighter… though you can switch out a sundara for a beyerdynamic if you wish to go that route as those are the bright headphones as well with V signatures as well which would be quite different to the 660s. Personally if you can find one, I would recommend a nighthawk Carbon or T50RP Argon as these are very different… warm dark and bassy… since 660s performs fine in competitives you can use these as your relaxing laid back movie headphones and casual gaming.
x2hr will definitely win on the soundstage while 990 isn’t as wide but is still quite large… x2hr has that more large sound open room feel to it while 990 forces you into the music through aggression. In terms of imaging though, 990 demolishes x2hr completely same with separation of sound but beyers are quite well known for being laser accurate and extremely good analytical headphones. As far as 3d dimensionality I would give that a bit more to x2hr as the added space can discern things above and below and around the area a bit more but in terms of accurate reproductions the 990 will take that. In terms of signature though x2hr is a very warm fun sounding headphone but has issues such as bass bleed and muddyness, grain in the highs, and slight fuzzy mids meanwhile the 990 is a V shape signature extremely sharp and not meant for everyone due to this, raised yet controlled bass, and slightly recessive mids where the mids sound pushed back… so if someone loves mid presence the 990 is most likely not a good choice you would want the 880 for mids or just EQ the 990