If there's one company that can raise the bar in the world of portable audio, it's Sennheiser. The legendary audio brand is releasing the IE 900 earphones, their latest in-ear offering that the brand says will deliver a clean and balanced sound signature that is true to the original recording. The housing of the headphones is precision-milled from a block of aluminum before being assembled by hand in Germany. Beneath the surface is a new 7-mm X3R transducer with three Helmholtz chambers and a downstream acoustic vortex. Each set includes six different ear adapters and three gold-plated connectors to ensure mobility and comfort prioritized.