iHome’s new iD50 ($170) has been deliberately engineered as a small step down from the iA100, with a streamlined chassis and fewer frills that probably won’t be missed by most users. The iA100 featured a matte black body with silver edges, fabric speaker grilles, and a big, bright clock face in the center. iD50 has all of that, too. FM radio, dual alarms, and Bluetooth support for stereo audio streaming and monaural speakerphone modes?…