IIRC, Personal Memory Plus is the receiver remembers what each individual settings are for each input, ie DPLIIX for cd input and 7 channel stereo for tuner, DPLIIx for TV, 2 channel stereo for Net/USB input etc.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70