I am unsure as to why 3.16 has been removed. However, I am told that 3.20 addressed an issue with the 5200SE and presumably 5200.2 series running 3.16 would run about -6dB when compared to speakers running 2.63

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#1 Trinnov Altitude 32-8-16, 271, 8000XE, 7200SEHC, 7200.2, Seaton F18, JL Fathom F113, Revel w990's, Kef R7, ATI 528 Amp, JVC RS4100K, SI screen. Roon Nucleus+, Eno AG, Eno M link, 218.
#2 Mark Levinson No5105, Ayre VX8 and CX8, Vandersteen Treo CT, Preamp varies.
#3 Meridian Ellipse