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James Randi Posts $1M Award On Speaker Cables

Posted by kdawson on Thu Oct 04, 2007 09:03 AM
from the money-where-your-ears-are dept.
elrond amandil writes "James Randi offered US$ 1 million to anyone who can prove that a pair of $7,250 Pear Anjou speaker cables is any better than ordinary (and also overpriced) Monster Cables. Pointing out the absurd review by audiophile Dave Clark, who called the cables 'danceable,' Randi called it 'hilarious and preposterous.' He added that if the cables could do what their makers claimed, 'they would be paranormal.'"
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  • by 10Ghz (453478) on Thursday October 04 2007, @09:06AM (#20851123)
    ... are listed here [pipex.com]. Those wooden knobs are a real bargain! Only $485!
    • by purpledinoz (573045) on Thursday October 04 2007, @09:21AM (#20851367)
      I have ultra-high quality CAT5-e RJ45 cables for sale as well. For only $100 per meter, you can achieve up to 1 GIGABIT PER SECOND!!!!! That's 1 billion bits in 1 second! You can stream MP3s through these cables with unprecedented quality. Your streaming digital audio and video will be crisper than ever before. Not only are these cables made out of expensive COPPER, they are shielded by the high tech plastics.
    • by sqldr (838964) on Thursday October 04 2007, @09:23AM (#20851405)
      There's an old(ish) saying - music fans listen to music, whereas audiophiles listen to stereos.
    • by suv4x4 (956391) on Thursday October 04 2007, @09:54AM (#20851909)
      Oh. My. God. One of the items in there is some sort of box for processing your disks [musicdirect.com]:

      "New! Featuring four beams, nearly twice the rotation speed and improved timing processing, the Quadri-Beam is an ultra cool disc treatment. This patented process reduces the noise floor allowing far more information to be retrieved from the disc. It also works great on DVDs, giving you a picture that is brighter, sharper, crisper and cleaner. For those of you who have never experienced the sonic benefits of the Bedini Clarifier, it significantly reduces high frequency glare and increases retrieval of information, enhancing dynamic range. Detail and resolution are improved dramatically."

      I won't comment. This is Slashdot, so I guess you have some entry level knowledge to know why this is the most ridiculous thing you've read in months.
      • by Alzheimers (467217) on Thursday October 04 2007, @10:11AM (#20852165)
        Sorry, this one has you beat by about 25AU [machinadynamica.com]

        To Quote:
        The Teleportation Tweak is the phenomenal new product from Machina Dynamica. The Teleportation Tweak is an advanced communications technique discovered and developed by Machina Dynamica for upgrading audio systems remotely -- even over very long distances. The Teleportation Tweak has a profound effect on the sound and is performed during a phone call to Machina Dynamica; the phone call can be made via landline or cell phone from any room in the house. The tweak itself takes about 30 seconds.
        ...
        The effects of the Teleportation Tweak are instantaneous and the improvement to sound quality will be audible immediately. The Teleportation Tweak excels in 3-dimensionality, lushness, inner detail and air. Bonus: The picture quality of any video system in the house will also be improved - better color and contrast! Customer should pay via Paypal or check/MO (payable to Geoff Kait) prior to calling Machina Dynamica via landline or cell phone. Machina Dynamica's Teleportation Tweak $60.


        Transation: They will call you, for the bargain price of $60, and not only make your entire audio system sound better, but it will improve the picture quality on your televisions!

        ALL THROUGH A SINGLE 30-SECOND PHONE CALL

        Science just jumped out the window, and took Logic and Reason with her.
      • by IgnoramusMaximus (692000) on Thursday October 04 2007, @10:32AM (#20852595)

        W... T... F... If being an audiophile means having the sort of mindset to remotely accept that as plausible, suddenly I have much less respect for the audiophiles I know.

        May I remind you that you are living on a planet where countless hordes torture, maim and murder each other to prove that their omnipotent invisible man in the sky has a longer dick then the other guys', where vast masses prostate themselves before some random idiot because he has pretended to be someone else in a series of moving pictures, where the supposed leaders of various tribes promise the sun and the moon while consistently delivering manure instead, only for themselves or their ideological twins be re-elected, over and over and over, etc and so on.

        Oh and it is also a place where one can "buy", "sell" and "steal" large integer numbers.

        The unfortunate truth is that most of humanity does not really qualify for the "sapiens" label in "homo sapiens".

      • The worst part... (Score:5, Interesting)

        by paladinwannabe2 (889776) on Thursday October 04 2007, @10:46AM (#20852809)
        Think of all the Audiophiles who will go and purchase these $7000 cables to try to claim Randi's $1,000,000 prize. Randi may have actually increased the number of people who will hear about and purchase these overpriced monstrosities.
  • Who? (Score:5, Informative)

    by PlatyPaul (690601) on Thursday October 04 2007, @09:07AM (#20851133) Homepage Journal
    Unless you happen to love debunking the falsely-claimed-paranormal, you're probably like me and had no idea who the hell James Randi is/was/will be. Here's [wikipedia.org] his Wikipedia page, here [skepdic.com] is his standing $1,000,000 challenge for a demonstration of true paranormality, and here [randi.org] is his Education Foundation (on "the Paranormal, Pseudoscientific, and the Supernatural").

    Also, here's [youtube.com] a video of him in action.
    • by miller60 (554835) on Thursday October 04 2007, @10:31AM (#20852571) Homepage
      Randi has also been prominent in debunking the prophecies of Nostradamus. I spoke with him in 1999 when I was working at a newspaper and got assigned a story on whether Nostradamus predicted a disaster connected with the spacecraft Cassini (believe it or not, this topic was big on the Internet that year ... the same text was later used to suggest that Nostradamus predicted 9-11). Randi was enormously quotable.


      "People are hungry for this kind of thing," Randi said. "Knowledge of the future represents power, and people are looking for power, so they pay money to astrologers and 1-900 numbers, not realizing that if the astrologers and operators of the 1-900 service really had all this power, they'd use it for themselves and not have to do all this marketing to others."


      Not sure what kind of speakers Nostradamus may have been using, tho.

  • oxygen-free sharpie (Score:5, Interesting)

    by pohl (872) * on Thursday October 04 2007, @09:09AM (#20851153) Homepage

    I find the audiophile phenomenon to be mighty amusing, even though I'm guilty of throwing away a few extra dollars for an "oxygen free" guitar cable or two. But holy crap, that's quite a price difference -- and for what? If anybody ever gives me crap about getting a Cinema Display instead of a Dell monitor, I'll just think of the Pear Anjou cables. Getting a monitor to match your workstation's case at least has "interior decorating" to justify the difference in cost, but who's ever going to see your speaker cables? Yikes!

    P.S. Did you know that if you mark around the edges of your CDs with a sharpie that the music sounds better? ;-)

    • by zig007 (1097227) on Thursday October 04 2007, @09:37AM (#20851613)
      I wouldn't feel guilty about the guitar cables, that's a completely different thing...

      There, the reason for buying expensive cables isn't usually much one of sound quality.
      Since the cable of an electric guitar is constantly bent,flexed and stepped on, it is more one about reliability.

      There are few things more irritating than crappy, stiff and badly soldered guitar cables that break after five sessions.
    • by jollyreaper (513215) on Thursday October 04 2007, @10:06AM (#20852097)

      I find the audiophile phenomenon to be mighty amusing, even though I'm guilty of throwing away a few extra dollars for an "oxygen free" guitar cable or two. But holy crap, that's quite a price difference -- and for what?
      My favorite is where they show you the difference in picture quality between the old style set and the cool new one -- in a commercial playing on your television. Now I know there's tiny, almost invisible text telling you the picture is simulated but I really don't want to know just how many people are taken in by this. "Marge, you can clearly see that the new TV has a better picture. Get your coat, we're heading out to get one."
  • copper is copper (Score:5, Insightful)

    by jcgam69 (994690) on Thursday October 04 2007, @09:10AM (#20851175)
    Companies like monster cable rely on ignorance to stay in business.
  • by ajs (35943) <ajsNO@SPAMajs.com> on Thursday October 04 2007, @09:11AM (#20851211) Homepage Journal
    Randi is a real character. If you don't know who he is, check out James Randi [wikipedia.org] on Wikipedia or The James Randi Educational Foundation [randi.org]. One of his boosters is comedian and magician, Penn Jillette, whose TV show, Penn & Teller: Bullshit! [wikipedia.org] he frequently appears on. He's ruffled quite a few feathers over the years by being the poster-boy for skepticism, especially with respect to "mystic" or "supernatural" claims, so don't expect there to be many objective takes on him out there.
  • by Lumpy (12016) on Thursday October 04 2007, @09:15AM (#20851261) Homepage
    Show those speaker cables are better than $0.49 a foot lamp cord.

    I tried back when I worked in stereo showcase. double blind tests and even testing with high end equipment showed that the $100.00 a foot directional low-oxygen speaker cables were no different than the lamp cord.

    Audiophiles typically are some of the stupidest people on the planet. they buy into the snake oil festering bull that any company comes along and pushes in any of the magazines.

    Want an awesome example? Richard Gray power conditioners. They cost upwards of $5000.00 and do NOTHING a $49.00 one will. the sales people also make sure to tell you that you will not notice a change when you plug it in, it takes a few weeks for the capacitors and electronics in your equipment to re-learn how to run with clean power.

    yes audiophiles fall for that kind of blatent crap!
    • by Overzeetop (214511) on Thursday October 04 2007, @10:22AM (#20852383) Journal
      You must not have broken them in. While many prefer to break in their cables for a week or two using the preferred content, I find that the best uniform results occur with a volume-modulated version of pink noise for 10 days. Once that's done (and it only needs to be done once) you can sub-condition for yuor content. For example, if I'm going to listen to classical, I'll run some recordings by the same composer and orchestra for a day or two first. Afterwards, I'll cleanse the path with at least 4 hours of pink noise before either changing composer or orchestra. I prefer 12 hours or more of pink noise if I'm going to switch to jazz or rock.

      You see, by not properly conditioning your cables, you made a mockery of the entire double blind test. These are sensitive, precision pieces of equipment, and can't simply be handled the way zip cord can.

      You'll have to excuse me now, it seems my tongue has seriously bruised my left cheek.
      • by Overzeetop (214511) on Thursday October 04 2007, @10:37AM (#20852677) Journal
        Oh, shit, I'm sorry. I just went and read the article. I didn't know that they would actually spend over two weeks running content on the speakers to "break them in." It was a joke - I swear - and was based on some goofy audio nut I read on a newsgroup over a decade ago.

        FTFA:
        I was sent a 4-foot single run pair and after a short break-in (Adam suggested that the break-in is minimal, but even so I gave them 48 hours on the Cable Cooker and good two-weeks 24/7 of music prior to the audition)
  • by QuietLagoon (813062) on Thursday October 04 2007, @09:18AM (#20851301)
    You know, you do not want your speaker cables to be resting on the floor. That results in distortion of the sound. Make sure you are using cable towers [cabletower.com] to hold the $900 per foot cables off the floor.
  • by SanityInAnarchy (655584) <ninja@slaphack.com> on Thursday October 04 2007, @09:19AM (#20851321) Journal
    Those speaker cables look analog.

    I'm not saying that it's at all possible for any human to detect the difference, but I suppose it's theoretically possible that if they are simply audio cables, there might be some measurable difference in the sound, even if no one could tell.

    HDMI is where it's truly insane -- yeah, let's gold-plate a cable that transmit a digital signal. Digital is different -- either it worked or it didn't. HDMI even moreso -- if it didn't work, your entire audio/video is likely to cut out all at once, probably for a second or two, until it can be reestablished. If the video works at all, you have a good enough HDMI cable.
  • I can prove it (Score:5, Insightful)

    by MyLongNickName (822545) on Thursday October 04 2007, @09:19AM (#20851325) Journal
    If you sell an idiot $5 cables, you only get $5 from him.
    If you sell an idiot $7,000 cable, you get $7000 from him.

    This proves that $7,000 cables are superior to $5 cables.

    Where is my million?
  • by elwinc (663074) on Thursday October 04 2007, @09:20AM (#20851337)
    The only reliable way to test matters of subtle perception (be it food or sound or whatever) is the ABX test http://en.wikipedia.org/wiki/ABX_test [wikipedia.org]. It works like this: present two known different samples -- call them A and B. Then present an unknown sample -- call it X that's either identical to A or to B. Can the listener or taster or whatever reliably classify X? If so, you have evidence of a perceptible difference. If no one beats chance over a reasonable number of trials, you have evidence that there is no perceptible difference between A and B.
  • While we're at it... (Score:5, Interesting)

    by mo (2873) on Thursday October 04 2007, @09:20AM (#20851341)
    Perhaps he can also uncover why this reviewer [202.186.86.35] thinks that a $60 aftermarket DVD power cable somehow affects it's digital video output. From the review:

    Colours of the individual vehicles come out much richer, and the all-important skin tone (she shows quite a bit of it too ...) is more natural. Edges are more defined, which makes it easy to make out the shapes and movement of vehicles far below. The biggest improvement, though, was in terms of contrast, and it was easier to make out details on areas of shadow than before.
  • by Colin Smith (2679) on Thursday October 04 2007, @09:22AM (#20851389)
    The ability to spend $5k on a cable indicates to females that you have higher social status than the rest of the ordinary spuds who only spend $5.
     
  • by Brazilian Geek (25299) on Thursday October 04 2007, @09:24AM (#20851413) Journal
    I know a few audiophiles, I know a lot of Windows evangelists, I know open source evangelists and I know quite a few evangelical Christians and all of them sound the exact same to me.

    It all comes down to faith and the feeling that "I'm better than you."
  • Pear's headquaters (Score:5, Informative)

    by hrieke (126185) on Thursday October 04 2007, @09:29AM (#20851485) Homepage
    The interesting thing that I noticed in reading up on the cable was that Pear is local to me.
    So I looked up their address listed, and it's residential. From the appearance, this appears to be a virtual company, in a nice Tony neighborhood, and all the owners have to do is sell a hundred cables and the house is paid for.

    Oh, and the first and final word on speaker cable is from McIntosh's Rodger Russell [roger-russell.com].
  • PRAT (Score:5, Funny)

    by tsa (15680) on Thursday October 04 2007, @09:36AM (#20851575) Homepage
    I never had cables with PRAT. I guess that's why I don't listen to music as much as I used to. Without PRAT, the joy of listening deminishes with time. I will go to the shop tonight and ask for cables with PRAT! PRAT is where it's at!
    But I have one question for Dave Clark. I was told by my audiophilic colleagues in the late 1990's that as a true audiophile it is important to:

    1. Check which way your amplifier is plugged in. Having the main power plug in the wrong way wreaks havoc on the sound,

    2. Switch on your amplifier at least half an hour before even thinking about playing music, even if you have an amplifier that is devoid of any tubes whatsoever,

    3. Put a second CD on top of the CD you want to play,

    4. Keep your CD's in the freezer at all times.

    This is all very very important for getting the best sound quality. Did you do all those things Dave? If not, I can't take your review seriously, sorry.

  • A fool and his money (Score:5, Interesting)

    by 15Bit (940730) on Thursday October 04 2007, @09:37AM (#20851601)
    As a former employee of a HiFi shop i can say that this is an area which demonstrates some of the strangest and least empirical methodologies imaginable. Some of the customers are far from normal too. We had a guy who got the local electric company to lay a dedicated cable from the main copper in the road direct to his HiFi. Another had a custom listening room built as an annex to his house. Then of course there were the cd-freezing, green-pen-toting brigade...

    Frankly, the drug dealers were our best customers - they just wanted something loud and they didn't f**k you around by insisting you order the latest greatest cable as reviewed by their favourite HiFi magazine. Paid in cash too.

    • by mrjb (547783) on Thursday October 04 2007, @10:28AM (#20852511)
      Another had a custom listening room built as an annex to his house. ...the acoustics of which were instantly deformed as soon as he would actually *enter* the room to listen to some music in there. You can buy the greatest and latest cables, but if you're gonna be in the room where the audio is being played, you're going to distort it. So better not be present while the music is being reproduced. That way you'll know for sure that there will be as little audio distortion as possible.
      • by mcvos (645701) on Thursday October 04 2007, @10:41AM (#20852743)

        Another had a custom listening room built as an annex to his house. ...the acoustics of which were instantly deformed as soon as he would actually *enter* the room to listen to some music in there.

        Ah, but that is easily solved! Instead of sitting in that room yourself, you should put a microphone in there, and transmit that sound to your the headphones you wear in a different room. That way you can truly enjoy the perfect, undistorted sound of your listening room.

  • The cable thing (Score:5, Interesting)

    by Animats (122034) on Thursday October 04 2007, @10:15AM (#20852245) Homepage

    I've always been amused by the cable thing. Even "high end" gear tends to use RCA phono jacks, which they gold plate, rather than BNC connectors, which are known to be flat to 50MHz and don't come loose.

    Even Monster Cable for speaker cable is silly. All you need is heavy-gauge copper. Nothing else matters.

    I was amused some years ago to find that Monster Cable didn't make VGA cables, where signal degradation is a real issue for long cables. That's a high bandwidth analog signal, and they'd have to actually work to make a good one. Eventually, they did get into VGA cables, which they overprice as usual. A high quality 5 meter VGA cable can be obtained for about $8, but Monster will charge you many times that.

    The "tubes vs. transistors" amplifier thing is amusing. Back in 1990, Bob Carver, who designs amplifiers, challenged two high-end audio magazines to give him any audio amplifier at any price, and he'd duplicate its sound in one of his lower cost transistor amps. Two magazines took him up on the challenge. [wikipedia.org] He won. Then, almost as a joke, he built the Carver Silver 7 amplifier, which is all tube and sold for $17,000/pair. Each amp has two chassis, one for the power supply, and the thing is chrome-plated. Audiophiles bought the things. Then he came out with a transistor amplifier with the same transfer function at 1/40th the price.

    There are things that do matter, like read error counts on CDs, but they're usually hidden from consumers. Early CD players had error counters, but the industry agreed to hide that information when people started complaining. Now, most CD players reread and buffer, so it's less of an issue.

  • by Mjlner (609829) on Thursday October 04 2007, @10:26AM (#20852469) Journal
    Dear Madam or Sir, I am contacting you in the strictest confidence, because I know you to be an honest and reliable person. I happen to have *SCIENTIFIC PROOF* that brand Pear Anjou speaker cables offer greater quality audio than ordinary speaker cable. This proof would win me US$1000 000, which I am prepared to share evenly with you. I only need a brand Pear Anjou speaker cable, but since my family's assets have been frozen by an evil, oppressive regime, I can't afford the cable or the necessary expenses. If you could can finance me with US$8000 I want to give you US$500 000. Thank you for your confidence! Cecil Rhodes, Nigerian Audiophile
    • by jkmullins (643492) on Thursday October 04 2007, @09:13AM (#20851235) Homepage
      All you need is an appropriate length of oxygen free copper cable/wire with sufficient shielding and appropriate gauge. All but the lowest of low end OEM cables meet these needs. Beyond this, there is zero difference in cables other than packaging and branding. Any perceived difference is in the listeners head.
      • by saigon_from_europe (741782) on Thursday October 04 2007, @09:17AM (#20851289)

        Any perceived difference is in the listeners head.
        If someone gives $7000 just for cables, there is certainly some difference in his head comparing to the head of someone who is not crazy and/or mentally challenged.
        • by ePhil_One (634771) on Thursday October 04 2007, @09:53AM (#20851893) Journal
          If someone gives $7000 just for cables, there is certainly some difference in his head comparing to the head of someone who is not crazy and/or mentally challenged.

          before the marketing dollars took over, most folks recommended standard Radio Shack lamp cord as speaker cable. It a heavy gauge, has polarity markings, and is generally dirt cheap because its marketed to cheapskates fixing broken lamps instead of people who don't understand electricity who want a new sound system

      • by jollyreaper (513215) on Thursday October 04 2007, @09:20AM (#20851349)

        All you need is an appropriate length of oxygen free copper cable/wire with sufficient shielding and appropriate gauge. All but the lowest of low end OEM cables meet these needs. Beyond this, there is zero difference in cables other than packaging and branding. Any perceived difference is in the listeners head.
        Ah, but therein lies the rub. Does the listener possess a standard head or one with vacuum tubes? Because tubes sound better.
    • by KiloByte (825081) on Thursday October 04 2007, @09:15AM (#20851265)
      Except, after some point, even those "audiophiles" cannot tell the difference. Human hearing has its limits, but gullibility has not.

      Did you ever wonder why virtually no one makes double-blind tests of this kind of gear? Because if enough unbiased reviews are posted, no one will buy the most expensive stuff. It's the same reason why winemakers attack double-blind tests so fiercely.
    • by sribe (304414) on Thursday October 04 2007, @09:16AM (#20851275)

      Isn't it true, as you build an audio system with very high end components, you need better cables?
      That statement by itself is strictly true. But what's missing is practical limits. Yes, it's true that very cheap (thin) wire can degrade a signal somewhat. Yes, it's true that with high-end equipment this can actually make a difference in the sound that actually comes out of the speakers. But the kind of wire that it takes to avoid any degradation can be had at Home Depot for less than $1.00/foot.

    • Re:Psychology (Score:5, Insightful)

      by MiKM (752717) on Thursday October 04 2007, @09:15AM (#20851255)

      But that's ok. If Speaker Cable A sounds better than Speaker Cable B to me, why souldn't I buy it?Because you're a sucker if you do.
    • Re:Psychology (Score:5, Insightful)

      by giminy (94188) on Thursday October 04 2007, @09:43AM (#20851707) Homepage Journal
      But that's ok. If Speaker Cable A sounds better than Speaker Cable B to me, why souldn't I buy it? It makes me think I've bought the better product.

      Because you'd do the world a lot more good if you bought a set of radio shack speaker cables (which sound the same), and donated $7000 to some variety of charitable organization [gregmortenson.com] (which would help those of us without a lot of money out -- a lot!).
    • Re:Finally! (Score:5, Insightful)

      by olclops (591840) on Thursday October 04 2007, @09:20AM (#20851343)
      Whoa. Let's not equate the tube vs. solid-state debate with cable voodoo. You can look at the waveform of a tube amp's output and compare it to a solid-state amp's output and see the difference yourself, if you know what to look for. Tubes color the sound (essentially, distort it, but in a way that many people prefer) by emphasisizing the odd-ordered harmonics of a given tone.
      • by wytcld (179112) on Thursday October 04 2007, @09:57AM (#20851953) Homepage

        Delicate instruments can tell one cable from another pretty well, but the only way to prove that one sounds better is to do a listen. A blind listen, of course, to eliminate psychology.
        Is that true? About all the uprated comments seem to imply that not even "delicate instruments" will see a difference in signal quality between a cable that meets minimum specs, available at moderate cost, and a cable that's much higher priced.

        The reason I'm asking is the "psychology" of an experience isn't just the consciously reportable part. Philosopher Ned Block [nyu.edu] has done some great work consolidating the research into experience and reportability, and concludes that what we're aware of phenomenologically is of far wider scope than what we're able to access in reportable form. A number of my friends are professional jazz critics. Even for the best of them, what they're able to report from a concert is far less than what they're able to consciously (and unconsciously) experience of it. This isn't just the subtle effects, but some of the most overt aspects of the experience - to the listener. But these aspects don't map into our spoken vocabulary - although another musician will often be able to describe them with more music. (A lot of music is musicians describing other music.)

        So the blind test you'd need to do is of more than whether listeners can tell you about the difference. The test needs to be about whether the experience has been phenomenologically different for the listeners, perhaps - especially because it's music - in ways where words fail them. To do that you're going to have to do some sort of longer-term tracking and evaluations of outcomes. For instance, if it's music that fills the particular listener with joy, is there more joy at the end of an hour's listening? That would be the measure of a true psychological effect. It's not psycho-acoustics we need to measure, but different outcomes in the inward experience of mood and consciousness.
      • by crgrace (220738) on Thursday October 04 2007, @10:16AM (#20852275)
        Fross,

        First off, I wasn't implying that high-quality headphones aren't valuable. I have $80 Sony headphones that have good frequency response. As to your question about balanced headphones...

        Most high-performance analog signal processing these days is balanced. For example, the analog data path in a communications transceiver is almost certainly balanced, as are the data converters. There are a couple of key benefits of balanced (called differential in the industry) signal processing. The key one is rejection of interference that appears the same on both wires (since the signal is the difference of current or voltage on the wires). Also important lately is an increase of 3dB in SNR by using a differential signal path. This is simply because the signal on the two wires is perfectly correlated, while the noise on the two wires is uncorrelated. That said, differential signal processing sounds like a good idea for headphones, right? Well... it COULD be.

        The problem is for a signal to accrue the benefits of balance it has to balanced everywhere there could be interference. Remember the point here is to have the absolutely cleanest signal possible (this is for audiophiles after all). The problem is that the signal IS NOT REALLY BALANCED. Look at the FAQ I posted the link to, refer to Art. III (Balanced Sources). If you look at the handsome diagrams you will see some problems. Now, to be a differential or balanced signal you need to have a signal that is equal and opposite. In the case of a vinyl source they get a single-ended source from the Phono and put it through two op-amp circuits, one inverting and one non-inverting, and they are depending on the outputs of the two circuits to have exactly the same phase relationship. True, they will be close because the audio is much lower in frequency that the bandwidths of the amplifiers, but it isn't truly balanced here. And the mismatch between the two halves is most likely MORE than the distortion/interference you would expect from a good quality single-ended headphone. Ouch!

        For the digital source, it is a train wreck! That is NOT the way DACs are supposed to be used! I have designed quite a few data converters and they in no-way-shape-or-form match each other well. (In digital audio we are talking about supreme precision, so the matching isn't even close) If they could match that well, it would be possible to put a bunch in parallel and create SUPER FAST data converters. You can't do that easily in practice due to all kinds of DISTORTION due to mismatches between channels. There is no way that the overall signal path would be limited in performance by anything here than the mismatch of the DACs themselves. I would guess if you looked at the spectrum of the "balanced" signal it would be full of tones due to the DACs. OUCH!

        That said, it is quite possible that subjectively this sounds good, because the ear finds certain kinds of distortion pleasing. For example, overdriven vacuum tubes sound good to a lot of people. However, from a technical standpoint, this is a supreme waste of money, and probably sounds worse than a good quality $100 - $200 set of single-ended headphones.

        Carl