op
I don’t want to be duped into buying something I don’t really need.
no one wants to dupe you... successful 'duping' usually requires cooperation of the 'dupee'
try stuff you are curious about in your own system, buy with return privileges, or demo a better dac if possible, or borrow from a friend -- no one can listen for you... if you can't hear a difference, then that box is ticked, just enjoy the music...