The Tyros and PSR 2000/2100 can quantize down to a 1/32 note. The Tyros and PSR 2000/2100 can also quantize 1/4 note, 1/8 note, and 1/16 note triplets and also 1/8 note + 1/8 note triplet and 1/16 note + 1/16 note triplet. What this essentially does, ie., [1/8 note {+} 1/8 note triplet] is it allows you to quantize two different note values at the same time, without compromising the quantization of either one. For example; if you use the 1/8 note + 1/8 note triplet setting, both the straight and triplet notes will be quantized correctly. This would be used to get a triplet feel in the rhythm along with the straight notes; making the sequence have a more natural and lifelike sound to it, ie., (not so much computer generated and artificial sounding). Also the Tyros, PSR 2000 and PSR 2100 allow 'partial' strength quantization too as apposed to full strength or also called 100% quantization.

Best regards,
Mike