QuAUDIOPHILIAc is a compilation album featuring music by Frank Zappa, released in 2004 by the Zappa Family Trust. It compiles recordings he made while experimenting with "quadraphonic", or four-channel, sound in the 1970s. Produced by Zappa, and completed by his son, Dweezil Zappa, it is his first foray into surround sound formatted music. Zappa prepared quadraphonic mixes of a number of his 1970s albums, which were left unreleased without a suitable format available on which to realize them, and QuAUDIOPHILIAc was billed as the first in a series of releases to feature this material.
Several of the tracks present on QuAUDIOPHILIAc were previously unreleased, or were only available in edited form. The recordings date from as early as 1970, with "Chunga Basement", a version of the title track from Chunga's Revenge (1970). Also included are three tracks from the 1975 Royce Hall, UCLA concerts with the Abnuceals Emuukha Electric Orchestra which would become Orchestral Favorites (1979).