Originally Posted by kamiraa
There are plenty of people on this forum who have credentials but never post them, who cares in the end. It's a public forum. It's all education in the end.
I agree with the statement previously posted, there are talented amateurs that can run circles around some EEs.
I can say that a majority of his research looks great for a amateur, it is though lacking sometimes in a full conclusion or layout. But, in all honesty he isn't producing a white paper here, hes just having fun.
I have my bachelor and master degree in EE from a top 5 school and work in the space industry. I'm not going to model all his "upgrades" to give physical impedance plots, frequency responses, etc. But, it is education reading and bring some fun to this thread.
Not sure I'd call this 'fun'. Then again, I just came back from a marketing science conference where a doctoral candidate did a serious paper on how survey respondents may have a different degree of consistency on picking 'bests' vs. 'worsts', and even switch the order of how they put one over another situationally. And I personally once wondered if our dog was left or right-pawed
. I guess we all have our interests LOL.
Having said that, my own $0.02 is that the OP has done some hands-on research that I can't begin to understand or validate for any practical use. It's certainly possible that some design compromises were made moving from the old analog centered world of, say, a behemoth like a 70+ lb. Denon 5803 to the more modern 4311 or 4520. But in an HDMI world, and dealing with the general push toward compressed modern pop music and MP3-type sources, having efficient DSPs, DACs, and digital elements that may hover at the extreme edge on causing testable distortion may be beside the point.
IMO we're dealing with mass produced consumer (even 'high end') products and extreme cost pressure. And at the end of the day, this isn't a cancer drug or a product where a design compromise might lead to disaster, like a fighter jet or the Space Shuttle. Bottom line is whether he can be proven to be onto something by engineers or listening tests, it's extremely unlikely to matter to anyone in a position to notice. And the kind of folks that would notice aren't selling Denons. They're producing $40K units like a Cinema Rhapsody IV pre-amp that are hand-assembled on small batches.