Sennheiser HD 4.4 BT Review: Bargain Bass

It’s hard to make a headphone more ordinary-looking than Bose, the king of rounded black plastic, but Sennheiser is giving it a shot. The company’s latest wireless headphones make even conservative cans seem gaudy and overstyled. They’re about as black, matte, and plastic as you can find. Even the name "HD 4.4 BT" is all function, no flash. It stands for HD sound and Bluetooth 4.4.