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Everything posted by eggers

  1. Thank you both. I have taken a closer look at the Pi2AES and it indeed looks more serious than the Audiophonics one. Is there a way to convert the phase noise specifications of the two oscillators so that I can compare them? Eg. the Audiophonics device is specified in PPM, and the Pi2AES (using the NZ2520SD) is specified in dBc/Hz.
  2. Why should I look at those? It is much more expensive than the Audiophonics hat I linked to, and seemingly not better designed.
  3. I need an AES/EBU output for my DAC, and I was wondering if putting this Audiophonics pi-hat on the USBridge Signature would be a possible (or even good) solution? The alternative would be to connect an external USB-to-AES/EBU converter to the USB output from the USBridge, but I’d like to limit the number of devices, PSUs, and cables.
  4. Have any of you run into the issue of iTunes re-writing the iTunes library files ‘iTunes Music Library.xml’ and ‘iTunes Library.itl’ every time a new track starts to playback? Well, my iTunes 11 does, and it seems rather silly.
  5. However, I can report that the Apple Scripts I'm using in iTunes seem to work in 11.
  6. I can report that the bug that causes files to be added to iTunes very very slowly, when the music library is placed on a NAS has not been fixed. Still stupefyingly slow. Bummer.
  7. I can see that everytime I enter text in the search field, iTunes re-writes the iTunes Music Library.xml and iTunes Library.itl files. Since these are quite large files, this is cause for the slowdown. A clear bug, and a very stupid one at that.
  8. Do existing Apple Scripts for iTunes 10.7 work in this version?
  9. If you are using Time Machine to back-up to the Drobo, then try deleting the volume with the Time Machine disk-image. Then create a new volume and set it to be a Time Machine volume in the Drobo Dashboard, then enable it on the Mac. This procedure helped me fix this issue.
  10. Thanks Chris. I filed a bug-report more than a year ago, but Apple have not acted on it yet.
  11. Hi Chris<br /> Thanks for the review. Did you happen to run into this problem I had?<br /> http://www.computeraudiophile.com/content/Adding-music-Drobo-FS-super-slow<br /> <br /> Cheers.
  12. To quote my original post: Copying the same files from the Finder gives the expected speeds of around 20 MB/s. So no, that is not the reason in this case.
  13. I only have single-disk redundancy on mine, so that's not the issue here. Time Machine back-ups are mega hyper slow as well. A Time Machine incremental back-up of the boot-disk is 5+ hours. And regarding the Drobo support: Expect snooty replies and absolutely no solution from Drobo. Despite the many months they had the Lion beta available they didn't develop a fix for these issues. Lame!
  14. I have a Drobo FS attached to my Mac Pro with Gigabit Ethernet. The iTunes library is located on a volume on the Drobo FS. Adding music files by drag'n'dropping them on iTunes is almost always extremely slow, and I can't figure out why. Adding MP3s and MP4s are usually fast, but larger files like ALAC rips og high-res ALAC almost always copy extremely slowly. Copying the same files from the Finder gives the expected speeds of around 20 MB/s. Drobo Inc. have been utterly unhelpful. Have anyone experienced this before, or have an idea of what is going on?
  15. <cite>I setup the Aurender S10 music server to shuffle between 44.1 and 96k tracks while I tried to identify them as 44.1 or 96k. This testing was a disaster as I selected the incorrect version half the time and really confused myself the longer and harder I tried to listen for differences.</cite><br /> <br /> If you cannot hear the difference, then there <em>is</em> no difference. The <em>only</em> way to overcome expectation bias is by blind randomization – the ABX.
  16. People who already own the Berkeley Alpha DAC would be interested in this device – I know I am. I'm running 5m of Toslink from my Mac Pro to the Alpha as things are now. I'm sure a short USB cable to the box, and then a long AES/EBU to the DAC would be better. If it's $1600 better I don't know. The M2Tech Hi-face Evo is considerably cheaper and might do the job well enough. I hope some reviews will shed some light on this. What I'm missing from the Alpha + Toslink combination is some 'granite'. Transient details are are a bit smudged.
  17. The minimum would be a dual core intel Macmini. Max out on RAM and add a SSD as internal harddrive, that speeds things up very considerably.
  18. Any software that can produce a sonogram can be used to check this. Sure, up-sampled material can be faked by synthesizing ultra-sonics, but who would do that? And I'm pretty sure synthesized ultra-sonics would look wrong. TAU Analyzer – for all it's qualities – is unreliable.
  19. I run a pair of Beyer Dynamic DT-770 Pro in the 600? version. They are very different from the 80? and 250? models. I recently got a Beresford Caiman DAC/amp with Gator board and AD826. Sounds good, but with an extra lift in the presence frequency area rendering some recordings with extra sibilance. Just for kicks I tried it on the stereo system too, but compared to the Berkeley Alpha it's soundstage was collapsed and treble was very harsh. I have a feeling these particular DT-770/600? are not a good match. The USB receiver on the Caiman is 16 bit, 32/44.1/48 kHz only which is a gr
  20. The entire Itunes catalog upsampled from MP3 to 24/96 LOL!
  21. Yeah, don't get your hopes up. It will probably be 24 bit, 48 kHz MP4/AAC.
  22. I had the same issue ages ago with an HP PC using the build-in sound card. I could hear everything going on on the computer as a faint high frequency shimmer. Even moving the mouse cursor around the screen was audible. This will happen in analogue soundcards, but really shouldn't happen in a digital output as the HDMI. It might be that you have a faulty unit.
  23. I've just started to download Beethoven's 5th & 7th from HDtracks, 24bit/88.2 kHz. My first concern was reading the liner notes, which says it is a 24bit/96kHz SACD, which is what that Lush Life one was. So why 88.2 kHz instead of 96kHz? SACD is DSD which is 1 bit 64F (44.1) = 2.8224 MHz. That can be converted to approximately 24 bit @ 88 kHz. Going to 96 kHz is mathematically pointless (as far I understand it) as you only get noise in the extra frequency range. In your image: http://www.computeraudiophile.com/files/Screen%20shot%202011-02-10%20at%207.44.22%20PM.png The noise
  24. Sounds like a bad connection in the laptop (the springs in the laptop's headphone jack can be worn out and thus give bad or no connection). The difference in sound quality between iDevices and laptops are tiny.
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