The Macintosh AV system computers (Quadra 840AV, Centris 660AV, and Power Macintosh with AV card) can record stereo audio to a hard disk from most audio sources such as VCRs, televisions, amplifiers, and CD, LP, and cassette players by directly connecting their sound out cables to the computer. The sound files stored on the hard drive can then be edited by using software on the computer.
Stereo audio input for the Macintosh AV computers requires a "Stereo-Y-Adapter" to connect the two RCA plugs (commonly used in audio equipment) to the 3.5mm stereo mini-jack on the rear of the Macintosh (indicated by the microphone icon).
Apple does not offer this adapter with the Macintosh AV system computers. A similar adapter (mono only) was included with previous Macintosh computers.
Functional adapters are available from electronics stores and hi-fi retailers nationwide.
*The following information is for Apple Internal & Support Providers Only*