hello, the music format is definitely the best of cda, which is the limit of human music format (that is, the one in CD). However, lossless music formats are popular at present: flac, ape, and general wav. The best of these three is wav, but it also has the disadvantage of too large files. flac is similar to ape's, but flac is a little bigger, but it is better than ape's, because even if there is a problem with one section of the file in this format, it will not cause the whole file to be unable to be played, while ape's is just ... you know. So in general, if it is purely about sound quality, of course, if you have a CD, you can buy a CD, and if you have no money or no money, you can buy wav, followed by flac and ape. Well, that's it. It doesn't rule out that there are other less popular formats, but those are flawed, so don't worry about it.