1) The exact frequency values for the Oscillators are (22.5792Mhz/24.576Mhz)  &  (45.1584Mhz/49.152Mhz)
    2) Both the versions supports at most of the mp3 files.
    3) Only different between 45/49 version and 22/24 version is, in 22/24 version ,it supports upto 176.4K(44.1k family) and 192k(48k family)   sampling rate audio files.But in case of 45/49 version supports above 176.4k(44.1k family) and 192k (48k family).
   4) And both the versions ,it wouldn't degrade any audio quality.Because both the versions of Oscillators(from NDK) having very low jitter (3-5ps).

hope this helps ..

The Kali page shows a badge saying 'Hat size Not Hat Compliant'. Does that mean it's not compatible with the Raspberry PI?

Hat size -: mounting holes and connectors will match with RPI
Hat Compliant -: Still under process but it support with RPI


what are the jitter accuracy measurements of Kali?

3 to 5 ps

How is an 'external Crystal Oscillators for MCLK or upgraded to a higher quality, multi-frequency clock that comes with automatic Fs switching and better performance' fitted?

Automatic FS switching -according to the Audio sampling rate KALI will select (ON BOARD) external Crystal Oscillators MCLK

Hello ,

Did you observed OMAP4 issues while doing apt-get update ?

Regards,

Admin

standoff spacer length is 12 mm

Regards,

Admin

Kali 22/24 Mhz will support only upto 192 Khz music sample rate ,
Higher frequency 44/48 MHz oscillators are used to support upto 384 kHz music sample rate