I'm in my mid 70's and have been wearing hearing aids for ~ 20 years. I worked in software development for > 25 years. I recently purchased a pair of Phonak Audeo Infinio Sphere 90's after using several pairs of Costco supplied hearing aids over the last 12 years or so. I'm interested in learing about DIY HA tuning using a Noahlink Wireless 2 device with the appropriate software. I came to this site to start learning about it. I've already found a lot of material to start reading. I'd appreciate any insight from other members re: DIY hearing aid tuning, use of a Noahlink Wireless 2 device, maufacturer-spcific fitting software, etc.