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Superdad

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About Superdad

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    Music lover; Owner, UpTone Audio

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  1. Superdad

    Everything sounds the same

    So if someone presented you with two complete sets of measurements of two DACs--say the full suite that John Atkinson runs on every DAC they review--but did not tell you which set came from which, you would confidently be able to tell us which one performs better subjectively? Every time? One would be from a $200 cheap-as-chips DAC, the other from say dCS or Meitner.
  2. Superdad

    Everything sounds the same

    Well it meant quite a bit to the speaker manufacturers who participated since we moved forward with production of the variant that they all ranked as the best. No. I am saying that none of the traditional parameters which could be readily measured would correlate or indicate the significant (to speaker designers who knew their crossovers well and to whom subltle differences matter) sonic variation between the variously built capacitors. And I am saying that it was more efficient and effective for aural observations to be used to make final manufacturing process determination. (And you will hear this from the majority of successful high-end audio manufacturers.) I still have some of the coded variant samples used in the test. Would you like me to send you the best ranked and the worst ranked for you to see what differences you can measure? See if you can tell by measurement which variant will perform best. No, I just happen to hang about here so you like using me as a straw man for you snark.
  3. Superdad

    Everything sounds the same

    You like to move the goal posts don’t you? So which is it you can not abide?: a) Four different speaker designers all preferred through listening the same slight metallurgical variant of end-spray (out of 4 secretly labeled versions; the odds for it happening by chance are minuscule); or b) That measurements to quantify the differences were not made. (There are plenty of measures that have been made on our caps: DA, DF, inductive reactance curves, etc., but a change in end-spray or oven time, even if they registered slight measured difference would likely not correlate with what is heard.) You continue to mistakenly think I am anti-measurement an/or anti-science. However it seems it is you—and some of your brethren—who come across as anti-science with your steadfast dismissals of supplemental use of empirical observation via A/B/A/B comparisons with trained human ears.
  4. Superdad

    Everything sounds the same

    Right. And yet both Galileo and Newton were considered heretics at the time. I think you are supporting my point. The pioneers are the ones that end up with arrows in their backs. I’m not in the least arguing against scientific rigor in audio engineering. There certainly are a lot of very questionable, overpriced products on the market—and not just in the space of tweaks and cables. But there are plenty of basic elements—including passive parts—that make distinctly audible differences which conventional measurements to-date have failed to reveal or show correlation. I don’t think these are unmeasurable things, I just think that the tools and methods are not focused on the right factors. Think basic microscopy versus genome decoding. I encourage anyone to—at the next audio show attended—approach the chief engineer at any established and respected firm and ask them if they have made any parts selections or circuit topology decisions based on listening tests. I promise you will get quite a nice earful about such.
  5. Superdad

    Everything sounds the same

    I'm all for that! But a lot of people here prefer to deny that any audio phenomenon that can be observed with the ear is valid for study. Sure a lot crackpot ideas were put forth by astronomers before they had the instruments to properly observe and measure, but an awful lot of correct science was conducted back then as well--based on observed phenomenon. Same with medicine.
  6. Superdad

    Everything sounds the same

    Really? The odds of 4 people randomly all making the same 1-out-of-4 choice is 0.39%.
  7. Superdad

    Everything sounds the same

    See, even a blind test across 3 continents (where all 4 participants--not in any communication with each other--chose the same variant out of 4) does not register for folks like you. There really is no point in trying to present anything here...
  8. Superdad

    Sonore ultraRendu

    My wife got me sucked into watching a romantic time-travel/historical-adventure TV show called Outlander, based on a way-too-long set of books. It is set in Scotland and England and I'd swear there is a character in it named Klipsch Cornwall. If not there ought to be. It's a great name!
  9. Superdad

    Everything sounds the same

    She speaks of "extra dimensions of space." That is what my wife is always looking for in her crammed-full clothes closet!
  10. Superdad

    Everything sounds the same

    In 2012/'13 we changed winding vendors for our film-and-foil polypropylene capacitors (in continuous production since 1988). [The winding house that closed--got bought out by a large conglomerate--quickly laid off the entire engineering and manufacturing staff. This threw a lot of audio firms such as Audio Research, Conrad-Johnson, and Vandersteen into a panic as the same company had been winding different types of caps for them as well.] In replicating the MusiCap recipe and sound with our chosen new winding house, it was far easier to get our "coupling" cap series (the 400V-1000V, 0.01uF to 3uF parts) right than it was to get our larger Speaker MusiCap series just right for our loyal OEM clients on several continents. I had a LOT of samples made, and when it seemed we were close I sent multiple sets to 4 key speaker builders, each of whom had been using MusiCaps for 12-20 years (and while there was a year gap between MusiCap production under the Hovland Company name and under the UpTone name, they held on because they could not find better sounding parts to satisfy). The sets sent to each of them were of the values they always used in their crossovers. They each received 4 differing sets (with capacitance values measured and matched within +/-1%), and each set was marked with only the cap value and a letter code. The differences between the sets were as listed in the table below. Thermal/voltage burn-in is part of the production process at the factory--wherein the parts are lined up on pegboards with clips to the leads, a voltage is applied to the entire board of caps (about 30 at a time) and the board is placed in an oven at about 275F for some number of hours. This is NOT some goofy-spoofy thing done just for boutique "audio" caps BTW. Other variation included the use or not of a copper-enhanced end-spray for the lead termination (these are extended-foil type parts), and differing solder alloy used to tin and terminate the leads to the end-caps. At the same time as I sent the sets of parts to the 4 clients, I e-mailed the below key to each of them as a password-protected PDF. I did not give them the password until after their trials and reports. Giving them the PDF before their testing gave them assurance that I would be honest about which variant they chose (I had discussed the variables we would be altering with some of them beforehand, and had preconceived notions about which would sound best.) After each client turned in their reporting about what they heard and how they ranked the versions--in what could not be more radically different speaker designs--I gave them the password to the PDF key. As it turned out, all 4 of them chose the same variant as their favorite, yet the ranked the other 3 slightly differently. While the reports by my clients were rather passionate, good luck finding measurement correlations between any of these parts.
  11. Superdad

    Everything sounds the same

    Just remember that in the earlier days of digital, few engineers paid attention to jitter. And there was a time in doctors who were concerned with sterilizing surgical tools were ridiculed. Now look where we are. I can also assure you that attention to detail in parts selection and circuit topology makes more differences in preamp/amp SQ than have been correlated by measurements taken (by either the designers or reviewers). Such is only controversial to those who have neither designed nor experienced first-hand the differences that careful parts choices can make. There are reasons why a Caddock MK132 resistor will sound different than a Holco, or why one film cap dielectric will convey the tune in a more natural way than another that leaves you cold. But good luck trying to make such choices on the measurement bench. Ask any successful speaker or electronics designer...
  12. Superdad

    Comparison of 2 DACs

    You mean it simultaneously sounds great and sounds like crap—until you plug it in?
  13. Hi Jed: Welcome to CA! Hope you will get to know the friendly bunch of fellow music/gear lovers here. A Mytek Brooklyn DAC+, a Sonore ultraRendu, and a JS-2? A sonic match made in heaven! While there have been some reports that SBooster's 3A power supply sounds better with the Brooklyn DAC+ when set to 13.2V, this does not translate to the JS-2 with its 7.2 amp (continuous; peak capability much higher) at 12V. The math and theory of all this gets rather involved, taking into consideration the dynamic performance of the DC-DC switching regulators used in the Mytek DACs. Suffice to say that there are now close to 100 Brooklyn DAC owners greatly enjoying the unique choke-filterer, dual-output JS-2. Piece of cake. We even provide the exact cables necessary. August and September have been record months for JS-2 building and shipping, and things were moving so fast that I was late in reordering the beautiful custom aluminum chassis we have made in Japan. So as of today we are sold out for the month, and with the next 100 cases not due to arrive until mid-October we are currently taking reservations--for up to 15 units--set to ship by October 25th. Sorry for that. All this year we have offered clients wait times of just 1-2 weeks, so this is an unusual situation for us. Anyway, please send a message via our web contact page if you wish to reserve a JS-2 for your new set up. Thanks and regards, --Alex C.
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