Over the years I've owned lots of headphones/earphones, including various Grado, Etymotic, Koss, Panasonic, Sony, Future Sonics, Ulimate Ears, Sennheiser, etc. Having lost/broken/mislaid/had stolen many of my favorites, I've been looking for a new pair of earphones for walking around/working out, as I've grown dissatisified with an old pair Future Sonic EM-3s I've been using lately. So I looked around on Amazon, came across the RHA MA-350s, did a little reading and research, and decided to give them a try.
Sound: At first, the 350s sounded really detailed, but overly bright and lacking in bass. After several days, I realized some of the issue was that the EM-3s I'd been using were, by comparison, bass-heavy and somewhat lacking in clarity and detail. When I switch back to the EM-3s from the 350s now, the EM-3s sound muffled. That said, if you like your bass heavy and/or like rap or hip-hop, these might not be the buds for you. The bass is there, but it doesn't really whomp. Also, voices, cymbals, stringed instuments, pianos, etc. really come across, but snare drums and the like can be painful/fatiguing --*WHACK!* -- at high volume. If you like to turn it up loud, they're harsh and too bright.
Fit: Small and really comfortable. The aluminum housings are quite small and light and the tips are well-shaped and comfortable. When inserted, all you see from the front are the cords sticking out of your ears.
Looks: Nice, elegant, understated looks -- small and silver/black, the RHA logo, and that's it. Nothing unnecessary.
Other issues:
1) Microphonics from the braided cord. I do notice more noise moving around with these than I do with non-fabric covered headphones/earphones.
2) Straight plug: I prefer a right-angle plug to a straight plug. In my experience, you're less apt to hit it on things and, if you do hit it, there's less stress on the jack. That said, the 350's straight plug is as small as it's possible to make a straight plug.
3) Distinguishing left from right. The small R and L marks embossed on the cord just below the phones are hard to see. I'm going to make my own distinguishing mark on one of the headphones so I don't have to strain to see which one is which every time I put them on (and if you're in dim light, forget it). Edit: Recently noticed that there's also a small raised dot below the "L" on the left bud. Still, it'd be nice to have right and left more easily distinquishable.
My suggestions to the RHA folks for their next earphone:
1) Right-angle plug
2) That little sleeve where you have the R and L embossed? Make them red and blue; or something to make right and left more easily distinguishable -- a (colored) dot on one; Red "R" on the right "RHA," or something. The raised dot on the left is a start, but it's not obvious enough by feel. Maybe a raised ring?
3) Deal with the microphonics.
4) A bit more bass; less strident percussion/guitars at higher volumes
Conclusion: If you jog or do something strenuous with 350s, you will notice more micophonics unless you do something to keep the cord from bouncing around. If you like headphones that emphasize bass and/or rap or hip-hop, these probably aren't for you; otherwise, the sound, comfort, and 3-year warranty make them a bargain. I would recommend them to people that didn't listen to music loud, people who listened to jazz/classical/anything at low to moderate volumes and people who listened to audiobooks. I would not recommend them to people who like their bass heavy or liked to crank it up. If they match your listening needs, they're a great deal at $35; if you listen loud/like lots of bass, look elsewhere.
Despite the few issues I have with them, I give the 350s four stars for achieving this level of sound (especially clarity and detail) -- combined with great comfort, cool looks, and a long warranty -- at this price.