With high frequency hearing loss, I think that the Dynaudio 40 is a great recommendation based upon what I have heard about Dynaudio having the best tweeters. GR Research has an upgrade for it that will take it to a much improved level. Speakers, often insanely expensive ones, frequency use really horrid components in their crossovers. So, if you can solder, that's probably a great way to go. He sells speaker cables too, but I have never heard them. Another consideration is to get bright speakers. I know a guy who has hf loss, and his system would drive most out of the room, but he loves it. There's no shame in designing the system for you, just don't try to impress others with it! 😉 All listening is personal. Some like systems so muddy that you can't hear differences in cables. They love their systems, I'd have listening fatigue in a minute, but they'll listen for hours. It's tough since most stores don't really focus on audio anymore. I think that TMS, The Music Store may work with you as long as no damage is done, and you'll pay shipping and perhaps a restocking fee, but I can't tell you that authoritatively, I think I read it somewhere. Hope you find what pleases you!