I found this old thread a few years ago from another member that also has RSHL. I participated in it a little bit with some of my posts. Another member, @Abarsanti , who actually has RSHL, has found the Oticon VAC+ helpful for RSHL He included a link that shows a video from Don Schum, who talked about how Oticon researched RSHL and determined how they could make the VAC+ fitting rationale more effective for RSHL.
I think the Philips 9050, being derived from Demant technologies, might use the Oticon VAC+ formula as well, even though they don’t call it VAC+. But that’s just my guess. Anyway, hopefully this thread and the video by Don Schum on RSHL can be helpful for you.
