Yes, Phonak Audeo Infinio Ultra Sphere is indeed a mouthful. The other new hearing aid system in the Infinio Ultra line, called the R, is available as a less advanced, cheaper model. I wore the Ultra Sphere hearing aids for a week to find out. An Oversize ProfilePhotograph: Chris NullThe Ultra Sphere hearing aids are visibly larger than most modern behind-the-ear (BTE) aids, clearly due to the extra silicon inside. It’s nearly impossible to quantify exactly how much better the Ultra Sphere aids worked compared to other models on this front.