http://www.head-fi.org/products/musicmaker-phantom-iii-shockwave-iii# So far two H-fi reviews and a GoldenEar review http://www.golden-ear.net/#!Review-MusicMaker-ShockWave-III-5-Driver-Hybrid-1DD-4BA/cmbz/573cfe320cf2817e4ba12376 Twin says it best even if you don't believe in burn in. Do it anyways. "The recommended burn in is a HUGE 350 Hours. According to many reviews on Tao Bao this is the point at which they Mature, and from my own experience it's true. You can actually hear the changes as they progress. Mine have +500 hours on them now. The Sub Bass is the lowest extension I have heard on any IEM to date. (of course I haven't heard ALL of them but....). It rivals my home theater Sub. They also have Bass, but because they have a crossover network inside them, the Bass is only apparent when it's present in your source music. It's not a consumer oriented enhanced bass like many of the IEMs from China." -TwinAcStacks I got the MusicMaker Phantom III / Shockwave III and after some tip rolling and burn in I have them under control. At first there was a very large spike in the upper mids causing sibilance galore but now that has been tamed and these puppies sing like nothing else I've heard. Wide bore tips opened them up and made all the difference to the spike. (Medium bore tips shouldn't be included with these). The Phantom III is wider and taller sounding than their little brother, the MusicMaker TK12 (which is already massive) and there is much more detail in the mids and highs and better extension to boot. Bass is colossal and might make this more of a basshead phone but although I am more of a treble head its quality can't be faulted to my ears. Treble is well extended and detailed, no polite roll-off like the little brother. Mids are well centered and brimming with detail, resolution levels on par with the T-Peos H300. Tone is similar to their little brother, mids and highs don't have too much warmth. Just right and natural sounding to me. Bass is huge but not sloppy at all. The 11mm dynamic sounds enhanced as though the bass player turned his amp up a few notches above the rest of the band. Mids and highs are very clear while being thick of note and convey an amazing amount of detail. More people have these on the way like TwinAcStacks for one so we will see how he and they feel about the sound of this monster. In the meantime I'll keep posting impressions from my fiio X5 and O2 amp.