Does it matter if the samples are wav at 24 and 48 or should it be standard 16 and 41? Should they be stereo or mono?
stereo or mono. rytm takes 24 bit, anything else will be converted but the quality of internal conversion is unknown so best to convert down beforehand if this concerns you.
Copy/paste from the FAQ at www.elektron.se
“The sample playback engine of each voice gives extensive sample manipulation possibilities. Samples can be pitched up and down, bit reduced and looped. Furthermore, start and end points can be manipulated, allowing for reversal of samples. The Analog Rytm uses 16 bit/48kHz/mono samples. Samples with other bit depths and sample rates are possible to use, but will be internally converted to 16 bit/48kHz. Each voice’s sample, mixed with its analog drum signal, then goes through the analog overdrive circuit and the analog multimode filter of the voice.”
wrong.
Refer to the above post for accurate info.

This setting in C6 the new version on elektron has been working best with all types of samples being thrown at it even in the same send!
16, my bad 