apparently it's all about resolution. I always thought 44.1 khz would be sufficient for recording purposes?
CD lossless quality recordings (44.1 kHz/16 bit): About 5000 tracks.
High-resolution recordings (48 kHz/24 bit): About 3200 tracks.
Higher-resolution recordings (96 kHz/24 bit): About 1600 tracks.
Ultra-high resolution recordings (192 kHz/24 bit): About 800 tracks.