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The most common source. Using software (Audacity, SoX, Adobe Audition), someone took a 16-bit CD rip, converted it to 24-bit, and re-encoded as FLAC. The file size increases (e.g., from 300 MB to 600 MB for the album), but no frequency content above 22.05 kHz (the Nyquist limit of CD audio) exists. Spectral analysis reveals a hard cut at 22 kHz—proof of upscaling.
(Hi-Res) version offers a significant upgrade over standard CD quality by providing a wider dynamic range and greater clarity in the album's complex, layered production. Pocket-lint The Audiophile Experience: 24-bit FLAC vs. Standard CD High-resolution 24-bit audio—often available in 24-bit/96kHz 24-bit/44.1kHz System of a Down - Toxicity -2001--flac--24 bit...
Producer Rick Rubin is known for a dry, "in-the-room" sound. Listening to the FLAC version makes it feel as though the band is performing three feet in front of you. Track-by-Track High-Fidelity Highlights The most common source