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About numlog

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  1. Have you ever used electrostatic or orthodynamics before? There was some sbaf discussions a while back on these technologies struggling with microdetail, it was my impression aswell with orthos, they just sound grey and flat compared to dynamics, even in the bass where they have low THD and almost flat subbass extension the bass is still far more realistic from dynamics in timbre and speed. Orthos seem to be improving each year, not sure how the current ones are.
  2. 375 is not that high, its the impedance ratio between input and output that's relevant. Are you are using that active crossover? the input impedance is gonna very high from the op amps so a preamp is unlikely to improve things and you'll lose transparency with all the added circuitry(AudioGD stuff is awful for transparency IME), even those power chip amps are gonna have fairly high input impedance relative to the fractal for direct drive...
  3. Not at all... I have never used for XXHE for upsampling, it is far more than just a good upsampler.
  4. I would be interested in seeing an XXHighend test if you get the chance... I seen a post by someone who was so struck by the difference it made that they claimed it had to be using some sort of DSP enhancement.
  5. The disconnection is a problem with XMOS chips or their implementation, I dont know the cause but have encountered a few times in DACs using XMOS for USB, some weren't affected though. I think it maybe might have something to do with ESD protection getting false triggered somehow.
  6. wtfplay probably has the largest difference of any player (simple as can be, runs and plays from RAM) but to be fair its an OS more than just a player. It sounds less digital than everything else but XXHE in Windows was still preferable, especially running Server Core off an Optane drive.
  7. Immediate impression of Pi 4, as expected, was the softness to the sound, similar to an underclocked desktop (or the same since the pi 4 has fairly low CPU speed). Like underclocking It's not really good or bad in terms of quality, just a sound character. After sometime to pick on the deeper nuances of the sound what became apparent were the flaws of the desktop SQ rather than the Pi strengths, Pi just sounds so much more transparent and cleaner. Maybe there is slight extra detail from the desktop in some ways but it's swamped but how less enjoyable it is to listen to, and Im fairly sure thi
  8. What are you comparing it to? And have you used the UPL with another DAC to compare to Fractal alone? Same question to anyone else who has the combo Im curious about the DAC, any information about it is very vague, Im sure it's good on it's own but unsure how much UPL accounts for the 'breakthrough', a good digital interface is half the battle for SQ.
  9. 1 global feedback path is already way down the ladder compared to the powerDAC, the only advantage they are claiming is short signal path but.... 4 passive components, fine, but how many active ones?? With a global feedback loop there must be quite a few. Could even be op amps. They probably could have implemented a simpler power output stage with only local feedback but were chasing super specs , they lose the objective market if the specs arent great. It probably sounds great, and probably has an overall simpler/efficient signal path compared to standard DAC>amp chai
  10. So there is 2 versions now? one for headphones and one for speakers, plus a possible bridged version? or is 'PowerDAC' now referring to the bridged version and 'headphone PowerDAC' is the first version that should also drive high sens speakers? I assume it has to a new version because while bridging would help with voltage output the output impedance would double, and its already very high at 1.2 ohm for speakers.
  11. I will definitely try NAS, with both ethernet and Wifi, just never could see how it could be better than standalone. An active LAN /WiFi interface seems like it would be more or less as harmful as active storage device , and then you end up with more stuff to worry about on sending end of the network. It would be very foolish to dismiss without trying it though, especially when so many seem to like it.
  12. I didn't realise the 2GB version is so inexpensive, it was only priced more than the 4GB on amazon (probably have excess 4GBs to shift) . It is a no brainer for sure (ordered one on Ali Express) The dedicated USB3 chip is one of the big improvements on previous Pi s, very nice to see it has its own 25MHz crystal rather than being clocked by PLL from main clock in the SoC. Should be better for SQ by default but also opens up the possibility of feeding an external clock (can be hit or miss if this works well/at all since most chips arent designed to accept an external clock via the crysta
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