Reviews for RHA MA450i Noise Isolating In-ear Headphones with Mic

The sound performance of these headphones was great, but I also wanted the functionality of the microphone for phone calls - I conduct much of my business on the go. A number of times I was told that the caller on the other end of the conversation could hear an echo. I replaced the original set that I purchased and was still told the same thing.

I'm not quite sure why this is happening but I have to return these headphones, the echo issue cannot be tolerated. Unfortunate, the sound quality is pretty good through the earphones.

I've finally found headphones that fit (and actually stay in) my ears! A lot of headphones that I've used in the past become uncomfortable after wearing them for only a few minutes, but that definitely doesn't happen with these. One of the things that I like most about this product is the fabric cast around the cord/wire; I'm not always completely careful with my headphones and so they usually break quite quickly, but the protective coat around the wire prevents the headphone from breaking or stretching.
This is the first pair of in-ear noise insulating headphones that I've ever used and I wasn't entirely convinced that the in-ear headphones would be as effective as the larger sound cancelling headphones, but these definitely are. They also are very convenient to use out in public because even if you are playing loud-ish music, not much of the noise escapes and you won't bother anyone around you!

These headphones worked well for a couple of months, but then the right side ear bud ceased to function. I thought for $50 that I might get more then a couple of months use...

I found those headphones to have good sound quality for the price with great mid tones and decent treble and bass (not overpowering).
The build quality is nice too.
However, the fabric covered tangle resistant cord that comes with these transfers friction/impact sound to your ears very efficiently. If you tap on the cord with your finger tip it sounds like a bass drum. If your slide your finger along the cord it sounds like a snare drum. If you run with the cord moving about your apparel it will generate muted bass and snare drum sounds constantly. They have no clip to secure the cord that might help in this regard, but not enough I think.
I have observed cord generated sound in other headphones, but never as severe as with these ones. I need to take them back as they just won't do for me using them to workout. Others using them for more static listening might totally appreciate them.