emphasised with the CX300s but definitely there is no reduced-clarity in the treble tradeoffs happening. I don't know whether the people who are praising the M4s have really heard other audio products (as they claim), or whether the M4s we got are just faulty with their terrible sound quality. @scarface: Just checking that you didn't get the mic version and plugged it into your cellphone? Older phones that don't support the TRRS connector will put out distorted audio. Try them on your PC and see if they sound the same. Reading through comments here over the years, most people on OzBargain have never heard a decent set of headphones, as they don't sell them for $20, so they have no concept of what good quality sound really is. @p1owz0r Where did you get your CX300s from..? Unless you are 100% sure they are genuine (not an eBay seller with a high rating), you can't really compare unknown legit-status cx300s with MP4nation M4s. Reading through comments here over the years, most people on OzBargain have never heard a decent set of headphones, as they don't sell them for $20, so they have no concept of what good quality sound really is. Completely agree with this, using stock apple earphones is definitely not a great 'base' comparison. Also due to the inconsistent products (gems and lemons) being pumped out by brands (e.g. ATH-M50, apparently a few variants exist) and hence the mixed reviews. The Sennheiser HD228s were also inconsistent, both from Sennheiser