Rating: 
Summary: Ear-Candy-Sweet !!!
Review: After trying 3 headphone sets i.e. (Creative Ear Buds, Sony Fontopia Ear Buds EX51LP & EX71SL), I find the SENNHEISER MX 500 ear buds FAR SUPERIOR for listening to MP3s on my Nomad (Creative) Zen Xtra. Call it Crystal Clear, Transparent or whatever U like, every instrument is heard. Heck, my tracks don't even sound the same as before.
The Cord: most are too long & get tangled...these R just right & come w/a case(wind-up).
The Buds: most don't fit well without using the soft caps...these (for me anyway) sit in really well and actually stay put even if I shake my head.
The Cost: most cost over $20... these just 16.95 (on Amazon anyway)
Rating: 
Summary: How Disheartening...
Review: After waiting two weeks to receive these earbuds, I was truly excited to look at the proud Senneiser name on the packaging. There was no problem in the length of time that it took to get to me, for I am [overseas] at this point and time, so it will understandably take a bit of time to get it...Thinking of the other reviews that I read concerning various Sennheiser headphones, there were slightly mixed feelings, leaning more towards inevitable pleasantness as opposed to inevitable disappointment... I read the entirety of the specifications and was very impressed by the full range frequency response (18-25000Hz; full range: 20-20000) and the sensitivity of 119db... I was expecting an onslaught of musical beauty... ... I guess that these are headphones that must be broken in. Whereas though my last pair of Sony earbuds sounded wonderful when I first listened to them (And all of my buddies know how much I hate to promote Sony). This is simply not true of the Sennheiser MX500s. Bass response is not impressive, and I am not one to use "Mega Bass or Super Bass"; I feel as though a good pair of phones whould sound balanced without these artificial mods. Furthermore, there is a sharp roll off below 50Hz for these. I could've sworn that the claim was that these phones went down to 18Hz... The sensitivity rating is truly over-rated. 119db? Maybe at maximum power handling, but not at any normal volume setting. One thing that I can say positive about these phones is that for the frequencies that are resonded to, it is flat. There is no design boost to any particular frequency. Voices are realistic and treble is not "tinny"... These headphones are very accurate, they just don't extend far into the bass nor treble frequencies. Don't be mislead though, it doesn't sound like your are listening to them down a hall or through a horn... I think that much of my disappointment with these phones is the non-full range sound, the overrated freq resp, and the fact that it might be months before I hear the full potential of these phones...if there is any potential left... What a letdown for Sennheiser fans...
... Gen
Rating: 
Summary: Not an acceptable iPod replacement
Review: Based on the reviews here, I bought these headphones to replace a pair of stock iPod headphones that were falling apart. I was disappointed. Compared to the iPod headphones, the Sennheisers are tinny and tight. They have very little bass response and the sound is not very full. It seemed like I was listening to an old tape player. I give these headphones three stars instead of two because they're so cheap. I'm going to try and get a bit more life out of the iPod headphones. If they break, I'll just spend $40 for a new pair of those. It'll be well worth it.
Rating: 
Summary: Good stuff
Review: Being an audio engineer I am quite picky about the sound products that I purchase. For the most part these guys have past the test. Young people listen to rap and R&B now. When the music is mixed and mastered there is a great emphasis on lower end. Point being, if you are in to rap and R&B and the like then these are not the best phones for you. I did a side by side comparison with the I-pod phones and the I-pod won hands down in bass. These I-pod phones are "hyped" in the bottom end but do not have the clarity of the Sennheiser MX-500s. The Sennheiser MX-500 do not color the sound like other headphones, they just give you a crisp natural image of the sound. If you need more bass, you can always use the bass boost on your cd player. In my humble opinion, I would suggest the Sennheiser MX-500s because they are much clearer sounding overall and you can't beat the price.
Rating:
Summary: Work great
Review: Hands down, I think they are the best headphones for the money. I use them at work to listen to mp3 music and love them. Highly recommended.
Rating:
Summary: Best earbuds for the price
Review: I am an earbud fan for portable use and after buying quite a few sets of earbuds in the last few years these are easily my favorite earbuds. They sound very balanced and clear, and provide very good bass for earbuds. The MX500 are also comfortable to wear for long periods of time. Using the RadioShack foam earbud pads helps the bass and comfort quite a lot.
Rating:
Summary: It's cheap. Only cheap.
Review: I bought this pair and returned after one-day try. This pair is so cheap that you can't beat the price. However, you also can't expect the performance. The sound really disppoints me. I had SONY MDR-888SP, which is among the top pair. The reason I bought this one is because my MDR-888 is sort cord and I need a long cord one. Unlike the clear, crispy and fully detailed sound from MDR-888SP, this one is just like you are listening to an old radio. Not even compete my crapy MDR-805. Just for the price someone might be able to suffer it, I'm not. And this pair is very uncomfortable for me. It hurts my ear after merely 15min usage. It is too big for me, even without the sponge. However, the SONY MDR-888 is so comfortable. In general, if you are not so picky for sound qualify but picky for price, it's a good choice. Otherwise, don't try it. BTW, the carrying case is so nice that I really want to keep it for my MDR-888 before returning.
Rating:
Summary: Not a good one
Review: I don't know if this is a bad design or I just have my bad luck getting a defect one. When I walk around with this stuff on, I can hear a very disturbing noise. Later I find out the earphone actually delivers and amplifies the friction noise between its cord and the zipper on my jacket to my ears! You can avoid this problem by being static (people alive won't always be static), or by wearing soft material clothing with no zipper.
Other pros and cons.
Pros:
Decent sound quality
Built in volumn contol
Cons:
ugly looking except the sennheiser brand on it
uncomfortable earbud (too large)
Rating:
Summary: best earbuds I've ever owned
Review: I have 3 pairs of earbuds. This is by far the best. crystal cleat high, great mid and low ranges. Highly recommeneded.
Rating:
Summary: Good Product
Review: I have had these for a few months now and I am very satisfied with my choice. For the size and price they have very good sound quality that can't be beat. The openness and tonal balance is generally what you expect from Sennheiser. The sound quality is not as good as my HD 570s, also Sennheiser, but the 570s also cost about one hundred and forty greenbacks, and they are of the traditional type. I think that the sound produced by the MX-500s has a little bit of emphasis on the mid range which I could do without and the connector definitely should have been gold plated, but they are generally a very good pair of headphones. The case is a nice inclusion too. The MX-500s are an excellent choice for Minidisc players and other devices without a lot of power output as they are very efficient.
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