Hands down the WORST headphones I have ever had
934183
Hands down the WORST headphones I have ever had. Very poor sound quality and they are waaaaay too big. If you hold the world record for largest ears in the world, these may still be too big for you.
579309
These are not worth the close to $100 that it cost me. When I bought these I already knew that the audio quality sucked, I could live with that if they performed anywhere close to how it is described in the tin. My two main issues (among other annoying issues) are the max volume still being pretty low, so in a busy street or a noise subway you will have a hard time hearing anything from these headphones. The other problem is the  horrible range, in certain busy places like malls or train stations where there is a lot of interference, this device will struggle, I own a lot of Bluetooth at different price ranges and I never had a set that would perform this poorly, even at home This device is only usable in the bit of my daily commute I do on a bike, but if I am going really fast or if there is a truck next to me...
Lets not even speak of the fact that these headphones shout in your ears "TREKZ TITANIUM CONNECTED" 3 times in a row every time they connect to my phone, what were they thinking!??!?!?!?!?
For this amount of money just buy some decent sports headphones with an open design that doesn't isolate external sound.
1348076
By far the worst headphones I've had the misfortune of owning. Extremely uncomfortable, lots of background noise, and they do not work as intended, let me explain. They have a wireless function that only partially works. The USB plugs in, and *can* work, or may not. They have included a wire plugin from the wireless to plug into the headphones out. This works, alright most of the time, but when it stops working, you can actually unplug the headphone jack and the headphones start working the way they intended when they designed them. Until that stops working, then you have to plug in the headphone jack. The problem with this is you have to go into the sound settings and redirect your programs to run through the headphone jack or the wireless USB depending on which is currently working. Sometimes the volume control works, most of the time it doesn't. Much of the time the volume is stuck FAR too high or FAR too low. Sometimes the headphone jack is functioning for Skype and the USB is functioning for a game or vice versa. Also, it seems to pickup background noise heavily. My friends can barely hear my voice but they can clearly hear the television in the next room. Sometimes there is also a crazy amount of static. Their site offers NO support. When I wrote a public plea for help and some criticism they took my posts down immediately. These headphones are an absolute disaster.
3473555
I usually never write reviews on Amazon but after purchasing these headphones based off of the high rated I thought I would leave a review of my opinion. The sound quality of these headphones is absolutely awful. You can get better sound quality in a pair of apple earbuds. The bass is way too loud and the vocals are way to low and in some songs can barely be heard. I bought these headphones solely for use with Rap/Hip Hop vocals and in most cases I could barely hear the vocals over the beat. Yes, these headphones look nice but they are VERY tight on the ears and will cause your ears to become irritated and red within a half hour of wearing them. Definably do not recommend these headphones. You are paying solely for the name, much better headphones are available for this high price.
1492996
Worst headphones I've ever had.  Yes, they are the most comfortable in ears I've ever tried, but their performance sucks otherwise.

First off, they have NO low end.  The crappiest in ears at least have a little base to them.  These have none at all.  Everything sounds like its coming through a tin can.

Second, they pop and crackle at any reasonable volume.  Not ear-shattering volumes, but like 3 out of 10 volumes.

If I hadn't destroyed the hermetically sealed packaging getting them out, I would return these sh* headphones.

STAY AWAY.
2962184
Biggest pieces of crap ever. They sound exactly like any other headphones out there and you have to charge them up.  After only a few months of using them strictly on my computer inside, not even the Mobility part of Mo-Fi bull crap they advertise as, the headphones started to lose sound in the right ear piece depending on the position of the headset.  The wiring in the headband broke down right around the flexible part of the upper band.  Eventually these pieces of crap 100% went out when the head band wouldn't even conform the earphones to my head anymore.  They are overly heavy, overly expensive, overly tight, poorly made for the $350 price tag that they carry with them.  And to top it off the company completely denies anything is wrong with them when you contact them for customer support.  Absolute garbage.
36
First off the sound quality of these headphones are horrible.  There is absolutely no bass whatsoever.  If you turn on the noise-cancelling feature, the bass actually disappears even more. The noise-cancelling feature also does almost absolutely nothing.  Sometimes I don't even know if it's on or not, because it sounds the same regardless.  For ppl who paid fifty sixty bucks, you could've paid $20 more and get the highly superior Sennheiser HD 280s.  They actually cancel noise and w/o some stupid unit attached to the cable or any battery.  I've read in many other reviews that these headphones break easily.  I have not experienced that, because upon immediately listening to them, I never wanted to pick them up again. They just kinda sit there.  I highly do not recommend these headphones nor anything branded Philips.  There are other brands that proved "Great Sound" for a fraction of the price: Sennheiser, Grado, Beyerdynamic.  You don't have to be an audiophile to appreciate headphones superior to some crappy mainstream consumer headphones.
549473
I really wanted to like these headphones, but it's shortcomings are too large to ignore. Before that though, here are the pros and cons.
Pros:
1. Excellent comfort. The headphones feel weightless and put a hardly noticeable pressure on the head or ears. It's honestly the best I've ever encountered.
2. Very detailed sound. The treble is in-depth, allowing very minute harmonies and sounds to be heard that would otherwise be dull, muted, or unheard.
3. Long cord.
Cons:
1. Absolutely terrible bass. And I mean terrible. Even acoustic songs, with simple drums and no trap or EDM influence, the bass bottoms out. The headphones can only register the higher treble range of the bass notes, leaving the bass raspy and grating. I was quickly disgusted with the sound when listening to any song with moderate to heavy bass.

Overall, these headphones have an interesting trade-off. On one hand, they're comfortable and have an astonishingly crisp treble sound. On the other hand, the bass is absolute garbage. I've never heard of headphones that perform in such a hot-cold way before.
1090651
These headphones are awful!  Unless your head size is the exact replica of the one these were contoured on you will not like them at all.  Period.

1)  They are uncomfortable to wear.  The plastic edges where they were cut from the moulding are sharp and hard and you will feel them even on the ear buds themselves!

2)  You can't adjust them in any manner.  One size fits none.  Would it have been that hard to make them adjust or slightly bendable???

3)  The behind the head part fits so low on your neck that if you look up just a little it hits your neck and moves the whole headset around.  Even something like the rowing machine.  Just looking forward while you row causes them to shift around every rep.  Crazy annoying.

I worked out in these once and am going back to my over the head Sony Sport ones.  They might go out every year but at least they do the job.
3186400
I can deal with headphones that aren't built to withstand punishment: I don't plan to do any extreme sports with these headphones on. However, there are several problems with the sound quality that I just can't get past.

The bass is overwhelming and muddy. I can enjoy bass-heavy headphones, but only when that bass is pleasing. These headphones destroy the bass track, then amplify it. Horrible.

Secondly, music goes out of tune every so often when played through these headphones. I've never experienced such a phenomenon before, but it's terrible. It sounds like someone's messing with the guitarist's tuning knobs as the song is going on, creating dissonance in the song and ruining my listening experience. Forget using these to monitor any sort of audio for this reason!! I can't trust these headphones for quality reproduction, so there's no way I'll use them for any of my recording, mastering, or filmmaking.

I'm happy enough to take these out on my dog walks with my ipod, as they work fine for that, but be warned that every step resonates in the headphones unless you step as silently as a ninja or something... Also, pressing the buttons makes a huge *clunk* sound in your ear, so that's annoying.

Overall, these headphones are a horrible disappointment. My corded skullcandy lowriders that I got for like $25 at TJ MAXX half a decade ago perform twice as well for 1/4 the price. I'll deal with the cord, thanks. The only reason I'm not sending these things back right now is that they were a gift.
762588
I really did not like these headphones at all, and cannot believe all the positive reviews. I had recently purchased my boyfriend a great pair from a different company, but they sold out, and these seemed like the exact same product. They were not at all. These cut out extremely badly when my phone was anywhere below waist level (like my back pocket), they vibrate ANNOYINGLY, EMBARRASSINGLY LOUD when turning on/off, connecting, and when the battery is dying, and when the battery gets low (which it does after about 3 hours of use) it repeats over and over again "Battery Low. Please Recharge Battery" until you can't take it anymore!! Not to mention, the "voice" of the headphones is ear-splittingly loud and obnoxious. I left them on my desk at work one night, and when I saw they were still there the next morning I was like "Crap".
4895336
I forgot my headphones today at the college and picked these up for $4.00 from the college book store, they are literally the worst sounding pieces of garbage I have ever heard. Initially I thought it was funny how bad they are but I am here for a few hours and now I am actually angry that these exist. I have to listen to a few recorded lectures and it is like listening to the instructor is in a canyon whispering through a tin can. IQ Sound should be ashamed they put these out at all. You could not make a worse headphone if you tried.
3114690
These are hands down some of the most uncomfortable and low quality Headphones I've ever owned.  I read a lot of good reviews for these headphones and ended up buying them as a gift for my girlfriend.  I was actually *embarassed* when I tried these on.  The ear cups are so shallow your ears are actually getting pushed by the uncomfortable (and loud?!) foam on the inside.  They felt like a pair of ear muffs you might by at lowes to block out noise while using loud machinery.  I couldn't *believe* how cheap they were.  Even my Bose AE headphones were WAY better.  I ended up having to buy her a pair of SkullCandys (which were more comfortable).  By the time I gave them as a gift , these were ineligible for return.  This was a terrible experience.  Please do yourself a favor and look elsewhere.
3073374
Do not buy these headphones. Normally I am a fan of Turtle Beach products, but this one is just plain terrible. I bought these an an upgrade to my old z300 wireless headphones. My z300''s are still working great. I wanted to give them as a hand-me-down to a younger sibling and use the new Stealth 450's for myself. After trying out the Stealth 450's I was immediately disappointed. The sound quality is terrible. Audio is quiet and muffled even with both the headphones and my computer volume maxed out. I could not get the DTS 7.1 feature to work even after ensuring all drivers were up to date.

Technical issues aside, the build quality on these is horrible. The padding on the ear cups are stiff and not comfortable. The headphones pinch and are far too tight of a fit. The "foam" on the head band is just as touch and rigid as the ear cups. The plastic just feels cheap.

Honestly if you are looking for wireless headphones for gaming, I suggest finding a pair of the z300's. They've been discontinued, but they are far better than the Stealth 450's.
2160729
I wanted to like these headphones but I just can't deal with the way it makes my music sound. No bass what so ever and very weak sound. I tried all three ear pieces to get a nice tight fit in my ear and that was useless too. I also tried different music genres from techno to rap to adult contemporary. They all sounded horrible coming from these headphones. I got a $20 pair of Bluetooth headphones with the wire between two earbuds (similar design to the Plantronics Backbeat) and they had more bass and a more powerful sound than these things. I will be taking them back to the store for another brand or just get my money back. Definitely not worth the money I paid for them ($44.99) and also the design did hurt the inside of my ear (for the record I do have small ears).
2151933
God awful pair of headphones. Here are the major issues:

-There is ZERO bass with this, you are much better off with your stock Apple headphones (if you have an iPhone). Its like listening to music with the bass on the EQ turned all the way down. I'm not an audiofile but even I can easily tell how bad these sound.
-Was getting static at times in the left ear
-Not at all comfortable (I have a pretty average sized head and couldn't get the ear buds to stay in easily
-Packaging was awful, the extra ear bud sizes aren't even in a bag (they are just rolling around in the box

Returning these tomorrow. Save yourself the trouble and do not buy these.
3987156
Terrible sound. Right out of the box wanted to try them. So I did. Put on some music that normally sounds great on my other headphones and come to find out the sound quality is terrible. The highs are too high. so much so it hurts to listen to them and the lows are non existent. Probably okay headset for speech or voice but I seriously doubt it. Return would not buy again from these makers.