“The application looks and works great IF your headphones are supported. Unfortunately I've discovered none of Stax headphones are, including my X1. Please add the support”
“While I was thoroughly pleased with my Reference 3 for Headphones, so much so that I never saw the need to upgrade to version 4, I must say that I am very satisfied with the improvements made in SoundID Reference for Headphones. It's not terribly different, but things just seem to low more easily with the upgraded version.”
“Took a while to find out the way how to upgrade my exsisting license as the "Upgrade" button redirected to a "page not found" site. Then somewhere in FAQ the suggestion was to go via purchase site and and aquire the Upgrade code and then use it. That worked, but the initial experience was somewhat confusing and frustrating.”