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    Hey there!


    I am new to all this stuff, and finding it a bit overwhelming, but I am determined to sort through, do my homework, and try to get the best quality for my buck.


    Right now, I have a fairly extensive collection of AIFF files on my 2006 MacBook, using iTunes. I have this going wirelessly through my Apple TV 3, which is then wired (HDMI or ethernet, I forget) to my Denon AVR-1913. These play through either my B&W bookshelf CM5's or my HD598 Sennheiser headphones.


    I would like to step it up so I am getting lossless quality.


    I think the first thing I need to do (after reading your FAQ), is to run Amarra or PureMusic concomitantly with iTunes. I guess I also need an external DAC, but am not sure how I will run it. I guess either the headphone jack (which apparently has an s/pdif in it) or the usb. This does mean I will have to have that computer be stationary, next to my stereo, which is annoying; I wish I could do this all wireless.


    My next issue is that I would very much prefer having the DAC go into the Apple TV; it would just make my life so much easier. I know I lose some resolution, but for a beginner, I am not sure I need 24 bit; I think I'd be fine with 16 bit. I understand there is also some loss in sampling rate with Apple TV, which lowers the resolution below CD quality. Is there a fix here?


    So...am I missing anything here? Will this buy me bit perfect, or lossless, quality?


    Any input is appreciated, and I apologize for any "stupid" questions.

  1. i have demo of this

    it worked beautifully

    ie ripped discs via xld,imported ripped discs from iTunes,including dvdaudios ripped from dvdaudioextractor

    then NO MUSIC-the songs play the volume bar works the wave forms on the analyze audio shows music to be playing

    NO help whatsoever from jriver jimh/johnt

    ALL I WANT TO DO IS DISINSTALL AND START OVER-i really like their format setup and potential

    how do i disinstall the demo-dragging the icon doesnt do it it pops out of trash bin!!


    ALSO purchased PM when listening to MOG with'playthrough mode' and Channel D Pad i get intermittent hisses crackles static and distorted music(otherwise sounds great) anyone else have this problem?

    other than not use it any suggestions-I DIDNOT HAVE THIS PROBLEM WITH THE DEMO-pm says thats impossible-that its a clocking problem with PM and my new gungnir-Jason Stoddard says no way brandnew macmini 2.6/i7/16gb ram>usb to brandnew gungnir>rca out ot my avr

    thanks bobbmd

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    Marino Marco
    Latest Entry

    Is there any settings posted here that everyone agree to have a positive effect? or does everyone have a different opinion?

  2. david.parker83
    Latest Entry

    I haven't posted in awhile due to being a new father. But couldn't resist sharing my budget, wife-approved setup for my little two month old. It includes a Tivoli Audio Model One (150$), iPod (used 150$), and dock (used 10$). I mostly leave the local classical music station going (no commercials), but occasionally pump through some Pandora or mp3. At night, I put on some pink noise for her.


    Hey...she can look back and know that dad made an effort to start her young! Not a bad little budget setup, even if it is mono.


    And of course, mom can listen to podcasts while she's doing...uhh...mom stuff. :-)


    The mono speaker sounds very smooth and musical. Voices in particular come across with ease. With no hint of boom or congestion in the midbass. And you can crank it pretty loud without any hint of distortion. A very nicely designed table radio indeed. Much better than any of the iPod docks that I've heard.


    <p><a href="<fileStore.core_Attachment>/monthly_2013_07/IMG_0037.jpg.8f89093482526274fa65186c6139bb7b.jpg" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28193" src="<fileStore.core_Attachment>/monthly_2013_07/IMG_0037.jpg.8f89093482526274fa65186c6139bb7b.jpg" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_07/IMG_0037.jpg.1d3c93f0bb235f7ea02bcd04db772545.jpg" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28443" src="<fileStore.core_Attachment>/monthly_2013_07/IMG_0037.jpg.1d3c93f0bb235f7ea02bcd04db772545.jpg" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>

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    Apologies for the pompous name but all the good ones have been taken ! It simply refelects my career and longtime interest in things to do with music and perception in an audiophile setting.


    My background is that of a medical specialist with training in Neurology, Neuropsychology, Neuropsychiatry, Rehabilitation and Pain Medicine. The latter is an interesting connection because the experience of pain, like music, also involves the somatosensory system as well as cognitive and emotional aspects. Basically the central nervous system inclusive of a mysterious 'black box' called the brain is the most sophisticated 'Signal Processing' suite known.


    Sound begins as a physical stimulus, a physical parameter which can be measured and graphed and quantified in analogue or digital format. It is then transduced by the human auditory system and converted to neurological electrical signals. Here it can be subject to modulation, degraded, amplified and otherwise altered. However it doesn't actually become sound, let alone music, until it is registered in the somatosensory cortex of the brain where it is interpreted by the brain in conjunction with multiple other inputs and influences. In other words music is a perceptual experience created in the brain.


    Yes the physical stimulus is the beginning of the auditory chain, and where many focus much attention, but it is by no means the end of the story. Measurements of this evoking stimulus are therefore only surrogate values in an attempt to correlate what we measure with what we actually 'hear'.


    For anyone interested, in the future, I will expand more on these topics as well as some ramifications for High-End Audio and also some of my personal views about it.

  3. There seems to be a fair bit of confusion about trying to reproduce square waves using bandwidth-limited systems (and face it, all audio systems are bandwidth-limited), so I decided to try to write up some basic things that hopefully will help clear some of the confusion.


    As we know, a square wave is the sum of all odd harmonics, according to the formula


    <p><a href="<fileStore.core_Attachment>/monthly_2013_06/dc1ca9de7f258a89d3c579f55d29ed05.png.93746a73f3387dae706cd0249e50e77a.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28170" src="<fileStore.core_Attachment>/monthly_2013_06/dc1ca9de7f258a89d3c579f55d29ed05.png.93746a73f3387dae706cd0249e50e77a.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>



    By the way, that formula has nothing to do with Fourier analysis - it is just the sum of a bunch of sine waves, so the only operation we use is addition.


    To perfectly reproduce the square wave, infinite bandwidth is required, so we will never get a perfect square wave.


    Here is a square wave built up from harmonics 1-99 (So if the fundamental was at 1 KHz, this square wave would require a system capable of reproducing 100 KHz):

    <p><a href="<fileStore.core_Attachment>/monthly_2013_06/square99.png.aa382256a46a72bcbe0b06cf578e9111.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28171" src="<fileStore.core_Attachment>/monthly_2013_06/square99.png.aa382256a46a72bcbe0b06cf578e9111.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>


    Not too shabby, right?


    OK, what happens when we lower the bandwidth? Here is the same wave, but with an upper limit of 20 KHz, so only the harmonics 1-19 are included:


    <p><a href="<fileStore.core_Attachment>/monthly_2013_06/square19.png.edc3a5207034ec28f7acf150284048b3.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28172" src="<fileStore.core_Attachment>/monthly_2013_06/square19.png.edc3a5207034ec28f7acf150284048b3.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>


    As we can see, we now have a ripple caused by the harmonics above the 19th missing from the supposedly infinite sum. Some people might think it is ringing caused by the DAC filter, but note that so far we haven't applied any filter. The ripple is totally natural consequence of the fact that the higher harmonics that would "smooth out" the square wave are missing (and note that the ripple frequency is at 21 times the fundamental, so above the 20 KHz human hearing range). This actually has nothing to do with digital - we could use a bank of analog sine wave generators feeding an analog mixer, and use a tape deck as our bandwidth-limited channel.


    Here is the same approximate square wave again, but showing the missing harmonics - exactly the difference between the approximation and the ideal square wave:

    <p><a href="<fileStore.core_Attachment>/monthly_2013_06/squareripple.png.a6c99d84af93ea432deb799f26656557.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28173" src="<fileStore.core_Attachment>/monthly_2013_06/squareripple.png.a6c99d84af93ea432deb799f26656557.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>


    Now, does this have anything to do with how it sounds? No, not really. The "squareness" of the square wave is purely a visual thing - and our ears don't care about visual squareness. To illustrate this, let's shift the phase of the harmonics by 180 degrees (180 degrees of harmonic 3 corresponds to 60 degrees of the fundamental), a change that is pretty much inaudible to the ear:


    <p><a href="<fileStore.core_Attachment>/monthly_2013_06/squarephase.png.d87210d4a9656fdcc54d1de3ccc75592.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28174" src="<fileStore.core_Attachment>/monthly_2013_06/squarephase.png.d87210d4a9656fdcc54d1de3ccc75592.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>


    Pretty nasty-looking, huh? It is the same square wave, but with a bit of frequency-dependent phase shift (as generated by any filter or speaker).


    It is pretty clear that the "squareness" of a square wave on a 'scope display has very little to do with how it actually sounds.


    So, how does the original square wave look when we shift the frequency up to 10 KHz but keep the high frequency cut-off at 20 KHz, just as would happen with any system (not just digital) that has an upper frequency limit below 30 KHz?


    Here is the result:


    <p><a href="<fileStore.core_Attachment>/monthly_2013_06/square10khz.png.b5395e0e8ae30d3db6cf16fd4e38c1d2.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28175" src="<fileStore.core_Attachment>/monthly_2013_06/square10khz.png.b5395e0e8ae30d3db6cf16fd4e38c1d2.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>


    So we have a sine wave. Not very surprising, considering we removed anything from 30 KHz and up - so all harmonics got removed, leaving only the fundamental?


    The crucial question remains - how does it sound? Funny enough, just like the unlimited square wave, as our ears can't hear even the 3rd harmonic at 30 KHz anyway. To our ears, there is no difference between a 10 KHz sine wave, and a 10 KHz square wave.


    So, considering how common square waves are in digital systems, it is a bit ironic that they are so useless in evaluating systems with a HF cutoff (both analog and digital).<p><a href="<fileStore.core_Attachment>/monthly_2013_06/dc1ca9de7f258a89d3c579f55d29ed05.png.e1f5f3413817fed100908876ebefa5ea.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28420" src="<fileStore.core_Attachment>/monthly_2013_06/dc1ca9de7f258a89d3c579f55d29ed05.png.e1f5f3413817fed100908876ebefa5ea.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_06/square99.png.9cc239cd98736db94d68e6721a03ba7a.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28421" src="<fileStore.core_Attachment>/monthly_2013_06/square99.png.9cc239cd98736db94d68e6721a03ba7a.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_06/square19.png.6bb0ddd973a9c518a95a425c65deb4ae.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28422" src="<fileStore.core_Attachment>/monthly_2013_06/square19.png.6bb0ddd973a9c518a95a425c65deb4ae.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_06/squareripple.png.16f2f5b6bad1612d5029fdca269c6c41.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28423" src="<fileStore.core_Attachment>/monthly_2013_06/squareripple.png.16f2f5b6bad1612d5029fdca269c6c41.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_06/squarephase.png.d2f2d70fcb43123e3eca43ddf6431cb5.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28424" src="<fileStore.core_Attachment>/monthly_2013_06/squarephase.png.d2f2d70fcb43123e3eca43ddf6431cb5.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_06/square10khz.png.62c572087a38941fa16007f03c97ebac.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28425" src="<fileStore.core_Attachment>/monthly_2013_06/square10khz.png.62c572087a38941fa16007f03c97ebac.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>

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    Latest Entry
    The audiolab QDAC should be on the market by now, I may use this with the caps project.

    i have heard quite a lot of MDAC users have experienced audio drop outs when using this dac with devices running windows 8, will be interesting how the QDAC performs.



    lots of boxes have arrived, nice fanless case, mobo, ssds, but the 2 components I ordered first the ram and CPU have yet to appear now 3days after the delivery date from amazon, so build is on hold until then!

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    - After receiving my exaSound e20 Mk II DAC first thing I noted was is small size (almost size of my router)- yes I am used to larger and heavier HIFI components in my rack . Installing drivers and setup was a breeze no issue. I had downloaded quite a few DSD 2.82MHZ and DSD2x/DSD128 5.6MHZ files from various websites including DSDfile.com, blue coast etc in anticipation. Oh yes, this DAC comes with a very long USB cable A-mini which I swapped with wire world platinum 1 meter and plugged in factory sent 12V laptop style power into my Power cell 10 SE synergistic research conditioner. I also converted most of my high resolution PCM recording into DSD/DFF files through my Jriver software to compare them to high resolution PCM and 44.1 recording


    I connected analog out of exaSound e20 Mk II DAC straight into my MC601 pair amplifiers and also compared it running through my Auxillary input of MX121 as pure direct using it for volume control purpose


    After about 10-15 min of run in time I listened to some of reference recordings. Purity of presentation through exaSound e20 Mk II DAC was astonishing. DSD files which I had heard before as aggressive and somewhat bright through oppo105 now sound full, natural with inner details and smooth texture. Imaging was wider, with more space between instruments. yet music just did not seem to appear from speakers as most often the case when sound stage widens. Connecting exaSound e20 Mk II DAC to MX121 auxillary input and running pure direct, mid bass seems more pronounced with some loss of details in extreme highs.


    Next comparing DSD 2.82 to 5.6MHZ file, transparency was more apparent with 5.6 file. To sum it up, DSD through exaSound e20 Mk II DAC seemed most "analog like" presentation I have heard in my reference system. I have just been exposed to a format which I never could imagined could sound so smooth and full. Well, I am not going back to dark ages again.....


    Revel Ultima Salon 2, Voice 2, Gem 2, McIntosh MC601 Monoblocks, MC207 for center and surrounds, McIntosh MX121 , Oppo BDP-105, Interconnect- Synergistic Element Copper, Tunsten, Silver, Power cord CTS digital, Tungsten and Precision reference cords, JL audio F113, Music Vault Pearl plus with SOTM USB card, Screen Innovation Black diamond zero edge 106, Sound Anchor Subwoofer, stand, JVC RS-40, Wireworld platinum USB/HDMI

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    Just throwing this out there.


    I've gone with using cd-r and dvd-r to back up my music download purchases. No particular reason other than I like them fixed and offline, unlike (some?) hard disk backup methods. But I also like them to look pretty, so I came up with a template to print out covers on my desktop printer, using standard paper and not requiring glue, double sided tape or surgical scalpel skills to assemble.


    You will need:


    1. Some enthusiasm for origami (you'll either find this fun and relaxing or incredibly frustrating - you have been warned!)


    2. A cover image, preferably cropped to exact square, and possibly in pdf format depending on which template file you use (most music downloads include an image that is perfect for the job as it is, but will often be jpeg so will need to be exported / res-saved as pdf). Apple's Preview will do the conversion (File.. Export.. from the menu), and I expect several cheap or free Windows programs can also do so.


    Download links:


    For US Letter size paper (8.5 x 11 inches):


    or <p><a href="<fileStore.core_Attachment>/monthly_2013_05/DiscEnvelopes_USLetterSize_zip.23bad7bdfba63b47dbce79d3327169ae" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28168" src="<fileStore.core_Attachment>/monthly_2013_05/DiscEnvelopes_USLetterSize_zip.23bad7bdfba63b47dbce79d3327169ae" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>


    For European A4 size paper (210 x 297 mm):


    or <p><a href="<fileStore.core_Attachment>/monthly_2013_05/DiscEnvelopes_A4Size_zip.58396519be918998518bded5e2ab2b7c" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28169" src="<fileStore.core_Attachment>/monthly_2013_05/DiscEnvelopes_A4Size_zip.58396519be918998518bded5e2ab2b7c" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>


    What they look like


    (the scalpel is mainly for dramatic effect, though the blunt end of the handle can be ermmm... 'handy' for pre creasing your folds if you want to be super-accurate, as would be a blunt knife or letter opener)


    How to use

    If you are going to use the templates labelled as Illustrator or Photoshop, you don't probably won't need my advice on using the respective programs. You are welcome to change / adapt / distribute the templates in any way you wish.


    If you are using the template labelled Acrobat: First I recommend you try using Adobe Reader to open them. Other pdf readers (eg Apple's Preview) may or may not fully understand the editing permissions within the file, although it will likely do no harm to the file if you want to try them.

    Adobe - Adobe Reader download - All versions

    Click on the "Artist Album Filetype" text and key in your own choice of information, and click on the blue square labelled "Cover" to bring up a dialog to choose your cover art (remember it should also be in pdf format, see above). You will be able to save your edited version. Probably best to also make the printout from Adobe Reader as well, sometimes other programs will not print out the form fields (ie your added text).


    Top tips for origami

    Don't try to create really sharp creases, they will tear the paper, if you can try and make a more rounded fold. Plain photocopy weight paper is easier to work with than the thicker specialist photo papers. Also (as stated above) a blunt knife or similar can help to create creases to help with the folding.


    If you are an eeeevil pirate planning your next car boot sale escapade

    Not for you! If you insist on using these to try and legitimise your bootlegs, please first report to your local police (preferably in full pirate costume) and have your parrot discuss the matter with the desk sergeant. Also please upload a video copy of the conversation to youtube for our general amusement.<p><a href="<fileStore.core_Attachment>/monthly_2013_05/58cd9bc3ef07a_DiscenvelopetemplateUSletter(Acrobat)_pdf.7ec340b1d1d116bf58490672890f03be" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28166" src="<fileStore.core_Attachment>/monthly_2013_05/58cd9bc3ef07a_DiscenvelopetemplateUSletter(Acrobat)_pdf.7ec340b1d1d116bf58490672890f03be" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_05/58cd9bc3f2e3f_DiscenvelopetemplateA4(Acrobat)_pdf.220074240cb0663a29ab67c46fae80f8" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28167" src="<fileStore.core_Attachment>/monthly_2013_05/58cd9bc3f2e3f_DiscenvelopetemplateA4(Acrobat)_pdf.220074240cb0663a29ab67c46fae80f8" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_05/58cd9bcbe4003_DiscenvelopetemplateUSletter(Acrobat)_pdf.8723a46c76bb3f31e82e553eb2adbcbf" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28416" src="<fileStore.core_Attachment>/monthly_2013_05/58cd9bcbe4003_DiscenvelopetemplateUSletter(Acrobat)_pdf.8723a46c76bb3f31e82e553eb2adbcbf" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_05/58cd9bcbe7c3c_DiscenvelopetemplateA4(Acrobat)_pdf.fa322114f44e394751aead0ba1781856" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28417" src="<fileStore.core_Attachment>/monthly_2013_05/58cd9bcbe7c3c_DiscenvelopetemplateA4(Acrobat)_pdf.fa322114f44e394751aead0ba1781856" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_05/DiscEnvelopes_USLetterSize_zip.8cd7e74310aa8f48fb246eaadc8c0f39" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28418" src="<fileStore.core_Attachment>/monthly_2013_05/DiscEnvelopes_USLetterSize_zip.8cd7e74310aa8f48fb246eaadc8c0f39" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_05/DiscEnvelopes_A4Size_zip.a4362f18cde56eb8c4d1275311758ac7" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28419" src="<fileStore.core_Attachment>/monthly_2013_05/DiscEnvelopes_A4Size_zip.a4362f18cde56eb8c4d1275311758ac7" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>

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    Hi Im new to the site and live in the UK. I currently have an iMac to play all my apple Losseles files through iTunes. This is connected to a Music Fidelity V-DAC which runs 2 ROKIT KRK5 active monitors. I want to improve the sound as the monitors are not giving me what I want, I find it a bit sterile. I am used to listening to HI FI separates through some floor standing RUARK Templers that are in my living room. I appreciate I am not going to get the same through my iMac system but I am willing to spend up to £600. As I am already using a good DAC I could just get the Audioengine A5+ active speakers as they dont include a built in DAC, but then I read the KEF X300A reviews that have built in DAC's and as a result I am unsure. I can get a demo of the KEF's but not he Audioengine. Can anyone point me in the right direction or give me the benefit of personal experiance? Anything would help.

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    Thank you.....

    Although I instaled Windows 8 JD under Boot Camp (Mac Snow Leopard), but I can not deal with problem-registration.





  4. Hi guys. Newbie here. Just bought a ifi iUSBPower yesterday at the montreal sonℑ show and am very happy with all it brought to the table. Since i use it connected to a SOtM USB PCI card i assumed that switching off the power switch on the PCI card would have been benificial or at least wouldn't have made any difference since the iPower is supposed to provide the power. But to my surprise leaving the power switch on gives far better results. Wanted to know if some of you with a similar setups experienced the same thing. thx :)

  5. In a recent piece from the Voice of America ...


    <p><a href="<fileStore.core_Attachment>/monthly_2013_03/gibson_women.jpg.350a8ca610d5f3a7761373815d8c0f87.jpg" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28155" src="<fileStore.core_Attachment>/monthly_2013_03/gibson_women.jpg.350a8ca610d5f3a7761373815d8c0f87.jpg" class="ipsImage ipsImage_thumbnailed" alt=""></a></p><p><a href="<fileStore.core_Attachment>/monthly_2013_03/gibson_women.jpg.ca1afa29fc20953090bce7935d2fc643.jpg" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28405" src="<fileStore.core_Attachment>/monthly_2013_03/gibson_women.jpg.ca1afa29fc20953090bce7935d2fc643.jpg" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>

  6. About Lumin app, after some analysis, I came to the following "conclusions", am I right or wrong?




    All the http tracks addresses and albums images are stored by the app.




    No UPNP requests are addressed by the Lumin, but only http requests. The UPNP server is fully bypassed.






    Faster navigation than network communications for navigation on the iPad.




    Long time to first load the llibrary. Memory limitation on the iPad. An infinite cache does not exist.



    No simple and fast server change, mismatched cache between several servers.



    One tag change on the server side requires a full parse of the entire library by the app, this is not automatic and requires user action "update Library"



    As UPNP server is bypassed (no UPNP calls, only http calls), server transcoding (or other UPNP server setup) cannot be used and is also bypassed. As wave transcoding provides better (little) output, than Flac (decoding software jitter), you cannot use the Lumin app to get server transcoding.





    Of course all this was tested. With Kinsky and Luminn app as Control Points, and Synology, Foobar and Jriver as UPNP servers.



    With Kinsky, the Lumin is naturally able to deliver UPNP requests, and, for example, transcoding works on the server side.



    I can inderstand that "fast" was a design requirement for navigation, but, maybe, all the consequences of the technical design choices to achieve "fast" were not enough evaluated.



    "Fast" can be achieved by a smarter cache design. No one looks at the entire library simultaneously. Cache updates can be made "real time" when entering a folder or a navigation branch.



    To bypass the UPNP server seems to me a very "strange" design choice for a UPNP network player control app



    Best and kind regards.

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    I do not hide it; I'm a little crazy around the edges. I'm an audiophile, a music lover, but also a damn curious, always looking for the famous "Nirvana" audio ... Anyway, I play all the time on my system. Well, the last few years, physically, I did not really changed my system, except that I went to dematerialized music, understand here that I have no CD any more. My whole disco on a digital network Storage unit commonly called NAS (Network Area Storage). The big advantage is that I can access my music anywhere in the house and even wirelessly in my backyard in the summer, just put on an appropriate network device and voilà. Here for the practical side of things, but the real reason I opted for dematerialized music is mostly because this way we get rid of all the disadvantages that have compact discs and their readings. I would not do a lesson about this here, for me; the difference is obvious between playing a piece of music on a CD or playing it from my music server, it’s like day and night.

    As audiophile, the fact of using digital files means a change in equipment. Of course I can no longer limit myself to the restrictions of CD player and standardization of Redbook (wav files sampling with 16 bits per 44.1 kHz). In fact, with today's digital converter, sampling beyond 32 bits 384 kHz is not uncommon. Studios offers more copies of their recording directly to the resolution at which they worked, without loss of information incurred possibly in resampling. For the happiness of audiophiles and purists of all ilk. Why this long preamble? To say that I have been tripping H-Res files for some time, I had the chance to get a dCS Elgar DAC. More precisely when dCS has marketed their new product line, the old models are often put into liquidation by owners anxious to have the newest devices. So I managed to get hold of a device of very high quality for a great price. But the real reason I wanted a dCS Elgar plus is that this device is a direct descendant of dCS studio devices and it supports DSD raw sample that we find on SACD.

    Here I might make some waves and it is certainly not the purpose of this little paper. This is only my personal opinion and some other audiophile crack pot, but the SACD is the only scan size that approximates the analog and natural sound. Its dynamics, its micro dynamics, its bandwidth is unmatched in my opinion. I was fortunate to have a SACD player Linn Majik, a unique device, but I have - as I explained to you – passed to digital files, eliminating all forms of physical media, it's funny, because Linn has stopped producing CD / SACD roughly the same time. Unfortunately, all of what was related to the SACD / DSD / DIFF was protected by super effective protections set up by SONY, Phillips.............. Until recently.

    Since his arrival, many people said that the SACD format was moribund and useless. It makes me think of some companies that did not even touch it; this format did not exist according to them.... Yet year after year, there is still a thousand SACD coming out, excluding direct DIFF productions - other types of DSD files use by firms such as 2L or Blue Coast Records - who understand the quality of DSD.

    However, although lucky that my dCS supports DSD, I had no way to enjoy it unless I’ll get the dCS Verdi SACD player and buy SACD.... Ah yes, I could also get me Studio Professional equipment at a very big price.... Ouch! But things have changed recently. It is now possible to copy SACD and an increasing number of DAC also supports the DSD, the demand created the need.... Yessss!

    So I picked up as much info as possible on the subject and two options became available to me: either I get a new Dac and abandon my dear dCS or seek a solution to provide a new life to my dCS. The more my research progressed, the more the solution was needed to keep my dCS was getting this dCS Verdi SACD player and convert all the files that I found and burn it all on homemade SACD.... Solution untested unless I buy the apparatus, a lot of money with no sure result. The other way was to get one of these new devices that also support all the new high resolutions audio files including DSD 64 and 128. All this was tempting, especially as dCS offers a solution at $ 15,000 (CDN) with the Debussy, a DAC as good as the Elgar plus according to many. Phew, it's a lot of money for a "maybe" solution. Being a modest worker with a modest salary, I had to find a modest solution. So I started thinking about changing my dCS for newer but more at an affordable price.

    By searching the web, I realized that many things had changed in the world of DSD, with the availability of more easily accessible record, a good number of DAC can now read native DSD DAC true the USB. I came across some good reviews about a small Chinese company that offered DIY components to build a DSD USB DAC. I told myself if only I can use the output of the converter DSD of this USB to DSD and connect it to my dCS Elgar? So I contacted dCS England to know the characteristics of the DSD Elgar plus and I also reach Albert, the engineer behind eXD. Bad news, the dCS uses the SDIF-2 studio standard (left DSD connector, a connector and a final DSD right connector for the clock), standard which was not used by the eXD device. After several conversations with Albert, he has understood my request and my requirements and told me, "Never mind, give me a month and I produced it," This guy is amazing, he made SDIF-2 adapter that fits its USB converter DSD. He even programmed drivers for Windows. A real genius.

    I got the digital interface a month ago and everything works perfectly with the dCS Elgar plus. The sound quality is amazing. I now have a custom digital interface for a reasonable price if I consider the money I should have put for the USB to DSD with the quality of a dCS.

    If you ever have dCS Elgar plus and want to give a second life to your device, do not hesitate one second and make the move.


    eXD makes the component that are in the Sonore DAC., You can reach him here: exd.audio@gmail.com

    but be patient he is a busy man.


    Ps, excuse my English, I’m a French speaking person

  7. A while ago I made the happy transition from CD to computer streaming - ripped all my CDs and started downloading. Bliss! Even stopped playing vinyl...bye bye Gyrodec, SME, Koetsu. I was very much aware of the limitations of iTunes, compressed audio files, etc, but felt that Apple was the way to go as I started out with an iPod eight years ago and enjoy Apple products (iPod, iPhone, iPad, etc). Well the latest step was to introduce a Mac Mini in to my hifi world and what a little bundle of joy that has been.


    Recently I bought a Musical Fidelity V-link 2 in order to take the digital audio signal from my Mac Mini 2011 via USB to the built in DAC of the Quad CDP2. In my previous set up using the digital optical out from the Mac to the Quad (iTunes or Songbird) the sample rates would be indicated on the Quad up to 96Hz. Now with the V-link inserted in to the chain and output via USB from the Mac the maximum sample rate displayed on the Quad is 48Hz. I have tried adjusting and changing all the audio/sound settings in the Mac without any difference - the Quad still displays a maximum of 48Hz coming from the V-link (using either optical or coaxial). I have also tried using Audirvana, Amarra and Pure media players with the same result - I can only get a maximum sample rate of 48Hz displayed on the Quad.


    Does any one ave any ideas about what is going on here?


    As an aside to my query I must report that using the V-link produces a dramatic improvement to the sound, irrespective of the my problems of sample rate shown on the Quad.

  8. Note: an updated version of this text is my main audio site (audioroot.net).


    Why the heck would anyone buy a DDDAC1794? This thing seems very much out of place in the arena USB and FireWire DACs out there, it costs a lot of money, and it requires an intimate relationshop with a soldering iron, too. However, I have been in the DIY world long enough to know that nothing beats a good DIY system.


    I had many and very different DACs in the past. My beloved Stokes DIY Tube DAC was restricted to S/PDIF and red-book 44/16 audio. I plunged into computer audio with a not-so-great Headroom USB DAC. Then I hot rodded an Apogee Mini FireWire DAC with a hefty DIY power supply. I use an Audiolab M-DAC in our living-room system (and it tends to break from time to time). My main system had a Linnenberg UDC1. And I've listened to the Weiss and many other cost-a-lot stuff. However, while some of those DACs sound pretty good compared to others, they all screw up the music in the same way. And I don't mean the painful "S" sounds and similar boorishness from crummy DACs. Even the «good» DACs take away the life, flesh and breath from the music, very much in contrast my trusted vinyl rig (Scheu platter and bearing, Teres motor, and Schröder arm). The Stokes Tube DAC and the Audiolab M-DAC both allow using different built-in digital filters with different characteristics. The different filters usually sound slightly different, and some sound «better» than others, but they never get rid of the artificial sound completely. But, maybe unfortunately, the filters cannot be turned off completely.


    When I «stumbled» over Doede Douma's description of his DDDAC1794 that does away with digital filters I knew I had to try a non-oversampling (NOS) DAC sooner or later. Why not just skip the digital oversampling/filter, if it affects the sound by inventing new sound data that never existed in the first place?


    Doedes technical description and documentation is very comprehensive and makes a lot of sense. My only hesitation was that I didn't want to start yet another DIY project that I'd never finish, because time is limited (there's a family, work, and too many other hobbies). But Doede sells completely assembled and tested DACs modules, power supplies, and USB interfaces. He even gave me a copy of the files needed to order a very nice custom-made chassis for the DDDAC1794 at Schaeffer AG. And when I asked him about the specifics of the additional bits and pieces needed to build a complete DAC, he simply included these in the package. For example, when I asked about which power switch would fit in the chassis, Doede just put the switch in the package (three switches, to be precise. Just in case I'd break the first and loose the second one). All this allowed me to build the DDDAC1794 in no time. The only gripe was when the Schaeffer chassis was a wee to too small to fit the power-supply heat sinks, but there was an easy fix (just a little side note to illustrate how smooth building the DDDAC1794 was: before I found the DDDAC1794 on the net, I asked the local Bryston distributor if I could borrow one of their DACs to give it a try. They keep promising I could have one once they receive one. In the meantime, I am playing my music using the DDDAC1794).


    How does it sound? Spectacular? Phantastic? Superb? Damn good? Fucking great? Yes, all of this. But that's all secondary with the DDDAC1794. The really important thing is that the DDDAC1794 doesen't sound like a DAC at all. It's a bit like a vinyl rig on steroids, but without the pops, clicks, and rumble (and I don't mean the old record player your dad had when he was a boy, but the freaky good 2013 stuff). The music and all the little details are just there in a very relaxed way. Ry Cooder is having a party in my house, Phil Collins' (yes!) drumsticks are flying in front of me, Sophie Hunger has moved to my house (was close anyway), Willy DeVille has risen from the dead, no more doubts about No Doubt, Timber Timbre is timber timbered, Mark Knopfler is in Dire Straits, Marianne Faithfull finally confessed her love for Bruce Springsteen, Jeff's Wine is as Lilac as it gets, Glen Hansard got a shave, Depeche Mode are Exit(er)ing, Lou Reed made me a Perfect Day, and Giant Sand and Marla Glen just called to be the next acts in my listening room. In short: I hear the music, not a DAC. In contrast to oversampling and digial filters, the NOS concept not only works, but also sounds good!


    As a final and very important comment, I'd like to congratulate Doede not only for designing the DDDAC1794, but also for documenting everything in full detail. The deep insight into how the DDDAC1794 works provided a lot of confidence that convinced me to try Doede's design and to buy his stuff. One can only guess why others don't do that.


    Update 11.3.2013: Doede sent me two Sowter 1298 transformers, which he designed as an alternative to the standard coupling capacitor in the analog out line. Apart from avoiding the coupling capacitor in the signal, the transformers also allow using the inverted output of the DAC chips, thus cancelling out even-order distortion. I immediately noticed the sound improvement with the transformers. The music sounded as if the musicians just got a pay increase! The transformers were expensive, but the money was well spent in my case.

  9. Last year, I cobbled together a draft of a guide to setting up a media server on a Mac Mini. It's intended to reflect what the consensus is around here, at least as to the basic issues. I've now revised the guide (with the help of a couple of folk here at CA) and have included a number of screenshots as well, which I hope people will find helpful.


    <p><a href="<fileStore.core_Attachment>/monthly_2013_02/Guide.png.2d0a089b70f2c81cd392dac7307d3350.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28141" src="<fileStore.core_Attachment>/monthly_2013_02/Guide.png.2d0a089b70f2c81cd392dac7307d3350.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>


    It's free, and it's available at the iTunes Bookstore.<p><a href="<fileStore.core_Attachment>/monthly_2013_02/Guide.png.84978627df852e7e97b0620e5bd28860.png" class="ipsAttachLink ipsAttachLink_image"><img data-fileid="28391" src="<fileStore.core_Attachment>/monthly_2013_02/Guide.png.84978627df852e7e97b0620e5bd28860.png" class="ipsImage ipsImage_thumbnailed" alt=""></a></p>

  10. Stephen Mejias wrote recently in the January issue of Stereophile of being thoroughly drawn in, transported & emotionally absorbed by the music while listening on a pair of $40 Dayton Audio B652 bookshelf speakers. A report which garnered him interesting evaluation relative to his credential & suitability as a legitimate audio critic. Just how can one be taken seriously by hard-core audio enthusiasts when one says they could enjoy what would be considered the equivalent of two tin cans & a piece of string?


    So just who is it that is missing the point here?


    I have had a pair of the B652's for years. We use them in our lab at work partnered with a little $40 Dayton Audio DTA-1 Class T Digital Mini 15 WPC Amp fed via PC & a portable 1/2 gig HD. & for X-mass this year, I purchased the same speakers & amp for my daughter who recently moved into her new apartment. The fresh reports from The Wife confirm the V same response as when she first listened to her 'new' system. It has been a while since I saw my daughter so enthralled & excited over anything as she thanked me yet again last week when I too was again impressed by her 'stereo'. In fact, I may have felt a twinge of envy. She may be obtaining far more enjoyment from her system than I do my own!


    So now you tell me....which of us is the audiophile & who is the pretentious claimant?

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    Greetings all,


    I need help finding a DAC with digital bypass. I have an Anthem AVM50v and I want to use that pre-pro to continue to decode all multichannel digital sources. However, for Zones2 and Zone3, I need an analog signal or I cannot send audio to those zones unless I copy the MAIN zone to Zone2 or Zone3. That's fine in most instances, but sometimes, I want to play a different source in Zone 1 (MAIN) and a different source in Zone 2 or Zone 3.


    The only way I can do that is to have an analog signal to feed the Anthem. My biggest problem is currently my AppleTV and my iTunes Media server. Neither have analog outs. (for my iTunes server, which is 50 feet away, I'm using the V-LINK USB to S/PDIF converter.


    I'm looking for an inexpensive DAC that will have digital bypass so that I can get the analog out from that source to support Zone2 or Zone3 but at the same time, it will continue to send the original digital signal to the pre-pro in case I want to decode multichannel audio that comes from movies and multichannel music, etc.


    The only unit that I'm currently aware of with this capability is the DAC Magic Plus from Cambridge Audio, but it's $600. I was looking to spend less than half that amount.


    Any thoughts or suggestions?? I haven't been able to find any other options.




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    If you intend running the supply at more than 1.5A continuous, you will need to increase the size of the heatsink. This can be done using the same schematic and parts count by arranging the parts on the PCB differently as in the attached photo.

    The PCB on the right was a much earlier home brew JLH PCB. Commercial PSU designs rated for up to 2.5A or 3A often don't have adequate heatsinking for running at higher currents constantly, although they can handle peak currents O.K.






    A little bit more than the parts of a DIY project, but considering the work and possible re-work, pretty cost effective.



  11. Hey guys


    i'm sorry Netload is causing so much trouble. i chose it because it always worked fine for me.

    thanks to abrusc there is now a torrent file, which should help getting it.


    ...looking forward to more impressions of audiophile windows 8 (not of netload :) )

  12. Please, I need to know quite fast....


    The model a very nice member mentioned of Medion is not longer available. I can also get at Nierle.de (also for Belgium) Intenso 3TB and 3.0 USB for the same price.

    Do you still recommend the Brand Medion?

    Thanks a lot,


  13. Oh god apple, what have you done?????????????????????


    - no album cover display or customisation in list view ("Songs" view)

    - column browser only displayable horizontally, not vertically


    i will need to revert back to 10 until this is realised.......... i hope this is possible...


    you are still able to view your album cover work while a song is playing. i actually think this version better

    because when you click on the small album cover when itunes is open the cover will pop up. and with this version you

    can close itunes and still control your music right from the album cover art. you can drag the art

    work any where on your screen and make it any size you like. i can close all of my players with

    just the art work showing and still have control of my library. if you like simplicity this is for you. and this is the best sounding itunes so far.



    have fun