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About barrows

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  1. You have to use DoP for the Qutest. Make sure your software is set to output DSD as DoP.
  2. I agree that the difference between these two will be mostly due to the power supply implementation and the output stage implementation (in terms of DSD direct mode with the D-90, and high rate DSD input), but I also suspect that these differences will be much larger than you might think. I would expect the May to trounce the D-90 in terms of dynamics, both micro and macro, and in terms of realistic musical presence and tone and timbre. I found the D-90 to be quite good in DSD direct, but lacking in those areas which I usually feel are due to power supply and analog stage implementation:
  3. @semente, I would add: "only for the discrete DSD converter" as a caveat to the Bricasti M21/M3 info above. These DACs do not allow for NOS with PCM content
  4. Yes, DSD is processed directly by the discrete DSD conversion stage on the M21 and M3 (if one chooses that stage for conversion). These DACs also currently accept DSD 256 input with the most recent digital input board (Mdx) and firmware. I run DSD 256 into my M3 all the time via USB from my Sonore Signature Rendu SEoptical acting as NAA for HQPlayer. Love the sound from the M3 with ASDM7EC modulator going to DSD 256!
  5. Quick little update: I had success running poly sinc ext (not "2") with this set up to ASDM7EC and DSD 256, also worked with SincM ASDM7EC (but only 44.1 base rate inputs of course, my DAC does not do 48 k DSD rates). I did not test exhaustively, but it does appear that now with the newer version of HQPe Jussi distributed to Small Green Computer for use with their Sonic Orbiter linux OS one can try some of the non 2 style filters with EC modulators and DSD 256 oversampling without GPU offloading. My machine is I9-9900K, 32 Gb Hyper-X Predator RAM running Roon+Sonic Orbiter+HQPe out to a Son
  6. Hahaha yeah Alex no doubt! There are an infinite number of possible combinations, and no company can be expected to test all of them. And indeed, if a company did endeavor to start testing such things, inevitably customers would then start asking which set up sounds best, which would result in a much deeper rabbit hole to go down.
  7. If you like that better, great, but you need to understand that the sound which you are preferring is a coloration, and not part of the original recording. There is nothing wrong with that, you are welcome to like whatever you prefer. For those who prefer to hear a high fidelity to the the original recording, using a DAC with a robust output stage direct to the amp(s) will achieve that end.
  8. Indeed, when considering the switching DC-DC converters typically used in computers, Alex is of course correct! but I wonder if anyone has investigated the performance of DC-DC switching converters vs voltage drop? Alex, have you and John made any measurements of this? For example, there may still be a sweet spot of operation where a switching converter works "best" (IE with lower noise and output impedance). These types of regulators are very efficient, such that they have much lower losses, but they still do have some loss, so there very well may be a sweet spot of operation in terms of
  9. Actually, you have it backwards: an electronic component which has a range of allowable voltage input will run cooler, and with less stress, with a lower voltage input. Here is why: The component, takes the incoming voltage, and (virtually always) regulates that voltage down to the working voltages required by the various internal circuits. Voltage regulation to a lower voltage is a lossy process, and creates some waste heat, and this waste heat is proportional to the amount of the voltage reduction: the more the voltage must be reduced, the more waste heat is created. There is anothe
  10. Sure, I am happy to respond to questions via PM here, or for questions directly related to Sonore products you can e-mail me at my work e-mail: [email protected]
  11. I have not directly compared these two, so cannot reliably comment except to say that I do not think Mola Mola is in it's own universe... Keep in mind, I only use my M3 with DSD 256 input from HQPlayer as well, so it is benefitting from very high quality oversampling in software.
  12. Yes, I find the above spot on... BTW, the digital filter used by Mola Mola is a linear phase filter, with a slightly slow roll off, so if one wants to avoid some aliasing, oversampling in HQPlayer with a sharper filter in software could help...
  13. Yeah, with the possible exception of true native DSD recordings. Note that a true native DSD recording does not require an anti alias filter at the input to the A/D converter, and as such avoids all the ringing artifacts that these filters embed into lower rate PCM recordings. Admittedly these are going to be very small differences, perhaps often inaudible, but they might matter sometimes.
  14. Yeah, not really, there is an important distinction here, the MM DACs are not oversampling by an even multiple of any known sample rate (1x, 2x, 4x, 8x... or 64x), the relationship is entirely asynchronous to the incoming sample rate, so no matter what rate one feeds the MM DAC, there is going to be some fairly laborious maths going on, hence reducing the processing done is not going to happen by much. And the DAC is still going to apply its SD modulator. While asynchronous sample rate conversion has gotten a bad reputation (mostly due to the relatively low power processing applied by dedica
  15. A very high rate: https://www.mola-mola.nl/dac.php And then much higher even before the final 32 element discrete FIR filter converter. Let's remember that in the case of Mr. Putzeys, we are dealing with someone who has loads of experience in SD modulator design, and the maths behind it. This DAC also has more processing power than most, using 3 AD SHARC DSP chips. Given how good it sounds with native rate files, it makes me wonder if this might be one of a very few DACs which might not benefit from external oversampling via HQPlayer-no matter what the user does, the
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