Black Sabbath: Paranoid (Rhino BA2 3104 BD). An old favorite, the seminal heavy metal album (footnote 4) sounds fresh, different, and even more menacing with distinct four-channel mixes.
Santana: Abraxas (Sony Japan SICP 10135 SACD). The quad mix for this classic rock album is quite different from the familiar stereo. Carlos Santana's blistering guitar solo on "Black Magic Woman/Gypsy Queen" flies around the four speakers, suggesting a voodoo caldron of sound.
…