I tried the big box hearing aid stores that advertise heavily on tv ( no names mentioned ). Actually bought my first instruments there. Had an issue and their answer was to buy new instruments. I found Dr. Harrington, via a reference. She and Tina are wonderful. Bought new instruments from over four years ago, any issues ( mostly mine), she would get me in for an adjustment and/or tune up. Today she did a hearing update and made the necessary adjustment, I didn’t realize how much I was missing! Original instruments, adjustable and comfortable!! No up sell or pressure! Great product and people!!!.