It will play 16, 24 or 32bit int at 48khz(or just about any sample rate with 48, 44.1 and 26khz playing at the ‘correct’ pitch. Any odd sample rate should play but will be higher or lower in pitch. Sample rates below 48khz will be higher in pitch above 48 will be lower) Anything over 16bit will just use more RAM and likely not be audible in most cases. Feel free to use whatever you like the best though.
@tnkz76 Sorry that I wasn’t clear on my question. I wasn’t asking what the specs were, but why the advertised spec changed.
If I understand @StupidAmericanPig response (thank you) - the s2400 samples (via physical inputs) and plays back at 16bit, but will handle files (via SD Card) at 24 or 32 bit.
Which would explain why it can’t be advertised as a 24-bit sampler.