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About Ittaku

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  • Birthday 02/03/1970

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  1. Archimago blog on MQA (guess what, he's not a fan )

    That's a real shame because reclocking made me largely throw out all other sources and just listen to music from my PC nowadays, moving on from an ageing system that I'd been happy with for a very long time. However reclocking is one of the features I specifically chose in a DAC; it virtually eliminated so many other variables in the chain it allowed me to use my regular desktop PC and concentrate on other aspects of the hifi. There are so many different ways to structure a hifi these days, long gone are the old standards...
  2. Archimago blog on MQA (guess what, he's not a fan )

    Works for me. In many ways I'm glad the DAC I only bought a few months ago doesn't have MQA and I just keep buying hires digital instead.
  3. Best sites to buy music?

    Prestoclassical is my favourite for classical music. Great selection, pricing in $AU and unlimited downloading once you buy without using a silly downloader.
  4. Archimago blog on MQA (guess what, he's not a fan )

    I guess in the end my question ended up being rhetorical and you gave a nice exposition for it.
  5. Archimago blog on MQA (guess what, he's not a fan )

    A question - why did they aim low with MQA? Given the ever decreasing costs of storage and bandwidth, high res digital is becoming less and less of a burden and will eventually be completely irrelevant. If they're trying to create a future standard for mastering, why not aim to pack 26 bits into 24 or max out all 24 instead of aiming lower? If they're aiming to gain favour with streaming sites, the recording industry and consumers at large, it seems to me they're heavily putting emphasis on the producers rather than the consumers to "get in now". If they're aiming at the client consumers that want the highest quality possible, it's a group that has been steadily aiming/collecting 24 bit audio and now they're being told to accept 18. I don't mean to debate whether the 24 bits matter or not, but that lowering the target will automatically make the consumers wary and less accepting after spending years being convinced by the industry they needed more.
  6. The ultimate 2-3 way speaker.

    I think mine are it, top scanspeak drivers, I have a 3.5 way passive crossover but the mids and woofer are dipole so you'll have to stick them in a box instead. I haven't completed mine, still waiting for my machined billet aluminium baffle so they're only in a temporary MDF one. d3004-66400, 2x 12mu-8731-t00 32w-4878-t01
  7. Archimago blog on MQA (guess what, he's not a fan )

    Flac is encoded whatever it's distributed as... most of my flacs are 88.2/96/176.4 and 192k 24 bit and lossless.
  8. Archimago blog on MQA (guess what, he's not a fan )

    No thanks, I don't want square waves when there aren't any in my digital.
  9. Archimago blog on MQA (guess what, he's not a fan )

    Great, you're getting square waves! I don't get them
  10. Archimago blog on MQA (guess what, he's not a fan )

    And that's not what's stored on digital data on redbook disks or highres downloads. It's not a square wave. If you generate them on your computer, the data is STILL not representing a square wave. That's now how digital works. You want a square wave, you get the software to create the closest thing to a square wave in whatever format you're storing it in, but you only get a square wave at the DAC stage by guessing that it was a square wave originally as the step converting it into digital data no longer shows a square wave. That's fine when it was a square wave, but it's not when it wasn't actually a square wave; it's one interpretation of the data that's extrapolating what's not there. Though I have a feeling I may be wasting my breath since I've just said exactly the same thing I did in my previous post in a different way and you'll still insist you get a square wave when you want to.
  11. Archimago blog on MQA (guess what, he's not a fan )

    Ah the perfect square wave interpretation. As impressive as they are to look at, that's not what the digital data is saying is there, even if the original data fed to an ADC was a square wave. A square wave is a sum of infinite frequency response sine waves and the frequencies contributing to making it square instead of the ripple effect you see in regular DACs are all in the ultrasonic range and beyond the Nyquist frequency of whatever sample rate you choose. It's then filtered down to a sum of sine waves that fit below the Nyquist at the ADC stage meaning the data is not representing a square wave any more. Attempting to recreate the potential square wave that might have been there introduces artifice of its own for other data. It may be correct for the square wave, but it's wrong for other waveforms, increasingly so at higher frequencies, and it has recreated a waveform that doesn't occur in nature and is not audible by humans for what it is, yet does so at the expense of capturing what is audible. I can see the temptation of pursuing a perfect square wave, but that's falling back into the interpretation that digital reconstruction is a join-the-dots which it's not. The first one I showed does not show ringing either; that's the correct interpretation of the data as it exists digitally. For more explanation of the square wave interpretation, this summarises it nicely: https://wiki.xiph.org/Videos/Digital_Show_and_Tell#Bandlimitation_and_timing
  12. Archimago blog on MQA (guess what, he's not a fan )

    If by deblurring they're referring to "impulse sharpening" then presumably they speak of turning this: into this: Stereophile wrongly called the early deflection preringing (it's not). The impulse in this does not occur in nature, and with the digital data represented, the former is the "correct" way to interpret the data, though this is seen under some circumstances to not sound as good as removing that early deflection. Minimum phase filters can get rid of that but at the cost of post-ringing. This component of MQA is apparently active in many MQA dacs even without MQA source material. Sound better? More accurate? Deblurring? I dunno... Pictures courtesy of this stereophile article: https://www.stereophile.com/content/mqa-tested-part-1
  13. [SOLVED] Bumped posts not appearing?

    Thanks for the confirmation; that's what I was assuming was going on.
  14. Elektra pre amp problem

    Jiggle may not be enough. There are proper tube socket cleaners but the easiest is to get some of those keyboard wipes from officeworks or something and wipe each pin on the valves. That won't clean the preamp's sockets but it may be enough since one wipes on the other. As an aside, I've even found that cleaning the pins fixed a substantial microphonic problem I had once. Presumably that slight looseness allowed the whole tube to move more in response to tapping the preamp.
  15. I've noticed that sometimes a post in the classifieds will show up on the right column as having new content, yet when I try to find it in the classifieds list it doesn't appear in the top posts at all. In fact I have trouble finding the post at all except from the right column. Are they being hidden because they're being bumped often or something? This is the most recent thread this happened to me with: