Shure has introduced a new pair of earphones and two new pairs of headphones at the 2011 NAMM Show in Anaheim, CA. The SE215 Sound Isolating Earphone features a single Dynamic MicroDriver, a detachable cable, and includes three pairs of black sleeves, three pairs of soft flex sleeves, and a carrying case. It will be available in clear or translucent black and is expected to sell for around $100. The SRH550DJ Professional DJ Headphones feature 50mm…