You won't regret it! They are great and the instrument separation is second to none. Feels like your right there listening on stage. So Engadget posted a article about mobile devices, to be honest the um3x rc are very low impendace so the output from the iPhone will be more than sufficient...

posted to Kezghan enjoy fella

Bio So wouldn’t consider myself as a serious audiophile otherwise I would be bankrupt by now! But I do like my sound to remain true to the quality of what the artist intended and would invest a little bit more for the benefit accurate, decent and appealing sound.I have some experience of IEMs...

  Go Team Commonwealth and Brazil!   Received the samples yesterday 29th July 2011 will get the review up asap, will re-ship early in the second week of August as I'm on holiday on the first week of August so hopefully get some quality time with the re-272   thanks  Fang  

Location : United Kingdom / London Sources : Fiio E7 DAC with Apple Macbook Pro, Sony NWZ-S610 Player, iPhone 4 Headphones: Sennheiser HD380, HD570 IEMs: Sennheiser CX400, Sony MDR-EX500, HiFiMAN RE-0, RE-262  Amplifiers: Fiio E7