SACD is an audio file which is protected from copying and extracting. Sometimes on the CD with the SACD files, the producers put WAV files for their tracks but this is an isolated case. Ripping the file to wav drastically decreases the quality and instead you will need to use additional sound processing hardware (filter) to capture the sound and then record it to wav/flac. In other words, you will not be able to rip this format unless you use custom hardware filters.