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Is there a sound quality difference between these two iems? They look same. cx175 don't come with pouch and doesn't have mic. the cx275s have mic and comes with pouch and an extension cable. But is there a difference in sound? cx175:   cx275s:  

Have a look at ebay. Xb90ex is probably made in japan only.

Try neutron. Trial is available. Also try the walkman port from Xperia z. Walkman player's clearaudio+ gives big sound.

Not neutral like se215. It's mainly for bass lovers, the bass reaches to sub level, not much mid bass hump. Se215 miss out very low tones, xb90ex play them with eaae. The soundstage is pretty big. It has 16 mm drivers. The bass is big but doesn't muddle other frequencies much, and clarity is...

You could have a look at the xb90ex. It has huge bass which suits ur genres.

Hip-hop, rap means you need something with big bass and vocal clarity. Have a look at Shure se215 and Sony xb90ex.

Sennheiser tips aren't narrow. But Sony ones holes are certainly narrow. Probably this causes lack of air. I don't know whether using Sennheiser tips on ex300 will make any improvement, but i certainly had improvement on xb30ex.

I had no problem with neutron on Sony. However, sound is even better with clearaudio+ on stock walkman player. Neutron is certainly better sounding than playerpro. But can't beat walkman with clearaudio+ on.

what i like about sony is the clearaudio+. the sound becomes alive, powerful, punchy and speaker like. i can't even think about listening without clearaudio+ on.

have you tried neutron music player? the sound could be even better.

don't get the xba 10. single ba driver is just not natural. they're so bass shy. if you want ba driver, then spend more. mh1c is the way to go and it's bargain according to head-fi.

sometimes, just eartips can save money, great isn't it? but doesn't always work un42netly. i tried sony silicon tips on sennheisers. as a result, the fit was better, but the sound was really harsh and piercing, the soundstage was congested and the bass was congested in both quantity...

mdr xb90ex if he wants bass. Seems to be the best bass deal.   http://www.sony-asia.com/product/mdr-xb90ex

check out sony xb series iems. their midrange or highs may not be the best in the price, but the bass is simply unmatched.