As per Mike (Lavigne) but with slight alterations:
1. master tape (15 ips) under close to ideal conditions.Many of these are sort of theoretical since, for example, few real dvd-a recordings exist.
2. 45 rpm or DTD vinyl
3. 33,3rpm vinyl
4. high quality analog tape (1st gen reel-to-reel)
5. FM radio live broadcasts under optimum conditions (for the experience -- not the freq range). VERY rare
6. DVD-A/
7. SACD
8. Hard drive PCM digital masters
8. redbook
9. uncompressed HD movie soundtracks / top quality casette
10. MP3--ipod nano
11. normal FM Stereo radio
12.XM Satelite radio