I up graded my set (the 1.2.1 version) one week ago.
When I purchased my DCS puccini with u-clock against Meridian 808.3 because DCS can play SACD but the sound of CD was good but not that good. However, now with this new DSP filter, all my CD now sound very musical and the music flow is great, the impact, sound staging improved and it sound less HiFi (Krell-KPS25SC) & more musical (Meridian 808). The effect was very much like what was mention in the Oct Stereophile follow-up by John Atkinson (the 1.2 Verson).
Please make sure you set the unit to "Asym filter" (not the Classic or Long filter but the third filter, the Asym filter = Apodizing filter) to get it sound as good as the Meridian 808 signature CD if not better. The Asym filter will not set automatically.
I am very happy I purchased DCS because now I have the best for SACD & CD.