As the latest pair of metal-bodied earphones from Maximo, iMetal iM-590 ($60) comes in two slightly different versions -- one with clear rubber tips and rear accents, the other with smoke gray tips and accents. Unlike a number of other Maximo earphones, iMetal iM-590 isn't a headset and doesn't feature any microphone or remote functionality; it's solely for listening to iPod audio, and designed to offer ambient noise isolation using your choice of…
