On tracks like Panopticom and The Court , the 96kHz sampling rate captures ultrasonic frequencies that intermodulate into the audible band. In FLAC (Free Lossless Audio Codec), you hear:
Peter Gabriel utilized a unique "Bright-Side" and "Dark-Side" mix concept for i/o , handled by legendary engineer Mark "Spike" Stent. The "Bright-Side" mix—often preferred by those searching for the FLAC files—emphasizes air, transient attack, and harmonic detail.
Offers a more textured, "muscular" sound with a wider soundstage and a focus on low-end richness.