The answer: rather than trying to outdo rivals on quantity of bass or sex appeal in design, Phonak is selling what it calls “Perfect” earphones—Audéo “Perfect Fit” is the family, and “Perfect Bass” is the name for its PFE 022 + Mic Earphones ($119). Unusually L-shaped, the matte and glossy black earpieces are designed to have their cables worn above and behind your ears, using silicone rubber tips in your…