Meridian 563 16 bit dac vs 24 bit

Is there an audible difference between the two. Would you consider this a viable upgrade?
There is a substantial difference between the 508.16 and 508.24 CDPs, and since the 563 DAC is based on 508 design, I suspect that the difference between the DACs is similar.
The Meridian 563 did not come as a 16 bit dac but rather had over 19 bits resolution. Sonically the 563 is actually richer sounding, with a fuller midrange than the 24 bit. The 24 bit has greater clarity and is more dynamic with a tauter bass and and more treble extension but with a distant perspective which makes the instruments sound smaller. Overall, I definitely prefer the 563.