One of the most famous album from Steely Dan, originally released in 1984 and remastered in 2000. Sound quality of this album is superb from the original release and compare to hear with CD edition, HiRes one got greater, wider range of sound frequency at the 1st hearing you can recognize.
I confirmed that it means this kind of HiRes source requires higher audio equipments, probably the most important element is a pair of speakers, then small powered (5w each will be enough) amplifire.
So if you don't have the certain grade of audio equipments, it'll be difficult to play HiRes files efficiently to bring out the whole potential.
Anyway, I do recommend to play HiRes files via certain grade of speakers, not via headphones and play as loud as possible.
If not, it'll be just wasting your money in the end.
BTW, I noticed some of HiRes albums maybe available for a certain period only.
For example, I can't find following HiRes albums no more @ HDtracks I purchased in the past;
Lush Life by John Coltrane
Relaxin' by Miles Davis Qualtet
So if you find HiRes albums, it's better purchase it while it is available.