You know, i did not liked ether its sound as it were out from the factory... That because I`ve started a "mod campaign" against the player I`ve just bought it.
This player (95) have some benefits, the best DAC chip at the moment, the transport, some connections possibilities, a very good video chip processor, and so on, but the analogue stage (power and after DAC processing) it were (is) not as it should be (in my opinion).
The 105 model it have even more improvements, an asynchronous DAC stage (still yet to see how it works...), better main processor, better transport, and so on, but it seems (from the first view) that the analogue stage is even worse than in precedent... Still yet to hear it, but for this one may buy it first... I think maybe I will do it at last... For the moment I`n not very decided. Anyway it may be modded this model too...
Do you have an discrete I/V stage? It may be more simple design when one use just opamps for a such stage.... Only two components: the op amp and its I/V resistor... Another one for final and that`s all...
A closeup of the 103 audio board.
An externally hosted image should be here but it was not working when we last tested it.
It seems to me that 103 have not AC coupling on outputs... Those caps around the opamps are for sure decoupling ones on power rails. It looks like the designers were thinking to improve the outputs of an more expensive player model, mounting those AC separation caps on output channels...
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Yes... maybe you right. Then it could be the other ones AC coupling... It looks like we are caps detectives...😀
Do you know that the working frequency of the processor clock of the new Oppo 103/105?
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Of course, there are ceramics in the power supply. This is a mid fi priced unit, what can you expect?
It may be the same as in 95 model (25Mhz). My 105 is on the way now, so in short time I will have a more precise answer....
Not sure about ya'all, but for the money, this is a pretty impressive piece of gear. While early in the "getting acquainted" phase, I am certainly liking what I am hearing.
With the right amp/speaker combo, this can act as a source/pre-amp combo for just about anything you can throw at it; shiny disks, optical/coaxial digital, HDMI, USB, NAS music server, etc. Quite the value proposition, or at least the potential for such.
Not to mention it also has video/surround possibilities. 😉
With the right amp/speaker combo, this can act as a source/pre-amp combo for just about anything you can throw at it; shiny disks, optical/coaxial digital, HDMI, USB, NAS music server, etc. Quite the value proposition, or at least the potential for such.
Not to mention it also has video/surround possibilities. 😉
I can agree... The only problem with this machine is that with few more "tricks", which it may be included in the design, it could perform even better (best!). For the same money...
The best caps for decoupling power supplies at digital IC pins are::Tadh Dar
X7R and above multi layer ceramin SMD capacitors, the smaller the package for a given value the better.
X7R and above multi layer ceramin SMD capacitors, the smaller the package for a given value the better.
Two (unofficial) pictures of inside 105: clock area for stereo DAC and final stage - output caps...
One can observe in the clock circuit, a little more care from Oppo designers to supply the oscillator with more clean power from a low noise regulator right near to it. But disappointing the frequency of this oscillator: 54Mhz...
The same as in 95 model 😕
One can observe in the clock circuit, a little more care from Oppo designers to supply the oscillator with more clean power from a low noise regulator right near to it. But disappointing the frequency of this oscillator: 54Mhz...
The same as in 95 model 😕
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