Hello, AlanYWM -
I'm curious: comparing the DX100 and HDP-R10, are you able to say definitively that one sounds better than the other?
I will PM you later with my inputs because what you are asking me to say is very sensitive to some folks here
Mine has 62 or something GB.
The HDP-R10 was meant for the Japanese market only...
Glad I helped.
You might be right about the 2 memory chips and they might have forgotten to put the other one in yours. As far as I know, you are the only one with this problem, so yours is quite likely "defective".
As for the hardware stuff, I honestly have no idea, sorry. Perhaps ask on the HDP-R10 thread? People in there may be able to help you more.