Both Soekris and Denafrips (afaik) are Sign Magnitude DAC's, they don't need that precise resistors as a non Sign Magnitude DAC's, like the TotalDAC.
For people that still don't understand the very significant difference, please read up on it. Short differences:
Non Sign Magnitude: Distortion is relative to full signal level, so increases with low levels.
Sign Magnitude: Distortion is relative to actual signal level, so stays low at low levels.
And 0.005% initial precision resistor is kinda irrelevant as Denafrips (according to their website) use 10 ppm/C temp coefficient parts anyway, it's more for marketing....
For people that still don't understand the very significant difference, please read up on it. Short differences:
Non Sign Magnitude: Distortion is relative to full signal level, so increases with low levels.
Sign Magnitude: Distortion is relative to actual signal level, so stays low at low levels.
And 0.005% initial precision resistor is kinda irrelevant as Denafrips (according to their website) use 10 ppm/C temp coefficient parts anyway, it's more for marketing....
Me I don't care, I'm sourcing parachut curses to land in your island garden with my DAC one day! You will hear yourself ! Just need some bigger foam pad for my AYA box lol !
Of course if I was rich I will drop with a complete philarmonic grup of musicians... but more expensive and need more Nasi Goreng than one guest, lol !
Of course if I was rich I will drop with a complete philarmonic grup of musicians... but more expensive and need more Nasi Goreng than one guest, lol !
The LVC types have lower output impedance and are faster, while the VHC can tolerate a little higher voltage, although 6.9V is pretty close to their absolute maximum.... Can't see that by itself it should affect the sound much....
Do you know the resistors values on the Ares ? Probably higher than mine.....
It's all a question about compromises, higher R-2R network resistance means more tolerance to driver impedance, but also higher noise and higher switching feedthough.
The only advantage would be lower driver resistance, disadvantage are plenty, for a start slower speed, more space and switching noise.... I know MSB Tech use them, but I decided against them, instead using higher performance LVC parts.
I rather suspect there's some history here as similar comments have in the past been transmitted to me by unsolicited PM. Seeing as I have usually not responded to any of those its possible making the disagreements public is the next step.
Just my own speculation though.
One cannot by any meaningful measure, beyond the fact that they are both a type of data bus, liken SPI to I2S as the most cursory examination would show. Anyone thinking of using the TDA1540, or the LTC2642 in particular, would be ill served by such a comparison.
I did a quick check of the inside earlier, some of the rolls of cap bank are for each of the five lt1763 (1.8v, 3.3V, 5V) post decoupling. I think there is one rolls for pre decoupling into those lt1763. And one roll for pre regulator of the resistor network.
Note image is from Ares homepage. If you check the lt1763 from datasheet, you can almost tell where Vout goes to.
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