thank you to everyone who responded. With due respect, I do wish that some posters read the whole post. Problem is that some music sounds great as it should but some does not and the question is, among other things, why such difference. I am now investigating the source and will try cd, records, and alternative streaming application. I tried another set of speakers -- the same result, some music sounds great but not LZ. I did try LZ first album (tidal, deluxe edition) and it sounded OK. Actually, quite good.