It was introduced alongside the Quadra 840AV; the "AV" after both model numbers signifies video input and output capabilities and enhanced audio.

These models have a deep round indentation at the center of the floppy drive slot to make it possible to fully insert the disk.

The Quadra AV Macs introduced a new universal ROM (codenamed SuperMario) that would later be used in all PowerPC systems.

[4] Introduced July 29, 1993: Introduced October 21, 1993: Jonathan Chevreau of the National Post said on August 7, 1993, that the Quadra 840AV and Centris 660AV were the next most interesting multimedia computers behind the new SGI Indy, putting Apple among the forefront of the birth of the major industry of desktop multimedia.

[6] Byte magazine said in September 1993 that Apple and Silicon Graphics were trailblazers by setting audio and video input as default features of these two Macintosh and of the Indy desktop PCs, which "could change the way businesspeople communicate".