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Bingo, Carlos, I choose not to participate any further is such nonsensical discussions, which are really pseudo-science lectures. You sir are the one saying things that would suggest our understandings of physical phenomena are complete and that nothing further can be found. You have no scientific basis for dismissing anything such as you have concerning the sound of tubes, power cords, and heaven knows what else. If I have lost your respect it sounds like I have adequately dismissed your limited understanding of what science is all about.

Fred may choose to humor you by responding to your uninformed questions, but not me. I know how well he hears, so when he says something I respect it.

Norm,
The time has come for the student to teach the professor a lesson. With my last post I set a trap for you. In asking you to “verbalize” what make a tube or a power cord better than another, you yourself will arrive at the conclusion that the difference in their sound end up being nothing more than mere tone-control: changes to the tonal balance and sonic palette!

It is not that I think that all tubes and power cords sound the same; on the contrary I indeed believe that they sound different and that you and others are indeed “hearing” a difference. What I content is that these differences can be achieved in a much more elegant way than trial and error. The same end results can be achieved through the use of knowledge of mastering/recording techniques, physics, acoustics, psychoacoustics, electronics and the use of high-end studio equipment and techniques which will result in predictable, repeatable, defeatable and scalable phenomena.

You have been at this long enough and I thought that you were smart enough to have figured out that tinkering is one thing but many of these tweaks are nothing more than snake-oil and an audiophile swindle. Come-on is time to take your head out of you’re as….

Norm I think that you will benefit greatly from my upcoming book: “The Great Audiophile Swindle!”

I will personally sign your copy as you are indeed in need of light being shined on you.

I look forward to continuing my discourse with you here and systematically dismantling each and every one of your views. Let’s get it on!

carlos, i'll be happy to address the acrolink mexcel AC cord, as i was the one who found it (in my own system, with the X0-1D2 in context). the sound was dramatically improved, with better frequency extension and tonal accuracy in the midrange.

it is wholly inaccurate to state that power cords are 'pseudoscience.' geometry & shielding affect EMI / RFI, conductor purity / gauge / stranding vs solid core affect tonal expression, connector quality affect frequency extension (particularly the bass), and connector plating also influences tonal expression. ---i am speaking from my own skeptical but impossible to ignore experiences. (in my day job, i'm forced to revise my opinion hour by hour, sometimes 180degree changes, so i've no set agenda on what is the right answer, which is how i approach audio)

you have to have an open mind and a good system to hear these things. which are you lacking?

and, fwiw, using a "tone-control" graphic equalizer is not the right answer if pursuing SOTA performance. as one designer noted "there is no perfect part", and you advocate adding an entire electronic box full of integrated circuits (and associated nasties & loss of signal accuracy) in to achieve your ends. yes, you may improve the tone (and that is the bigger element to long term satisfaction), but i can virtually guarantee that you're losing microdetail (not important to some, but greatly enhances the musical virtual reality effect)

when you find an IC that passes a signal without any attendant exaggeration or loss in a 20-20khz band, please let us all know. i think there's some several hundred high-end audio electronic manufacturers who would be interested in your finding.

Ryan,
You are talking to someone with degrees in both Physics and electrical engineering. I believe that you do accounting by profession correct?

As I said in my post above:

It is not that I think that all tubes and power cords sound the same; on the contrary I indeed believe that they sound different and that you and others are indeed “hearing” a difference. What I content is that these differences can be achieved in a much more elegant way than trial and error. The same end results can be achieved through the use of knowledge of mastering/recording techniques, physics, acoustics, psychoacoustics, electronics and the use of high-end studio equipment and techniques which will result in predictable, repeatable, defeatable and scalable phenomena.

When it comes to electronic circuit and design trust me you can't even begin to imaging who you are challenging as I design complex electronics circuits for NASA and HP among others. You have no idea what you are talking about with this statement:

When you find an IC that passes a signal without any attendant exaggeration or loss in a 20-20 khz band, please let us all know. i think there's some several hundred high-end audio electronic manufacturers who would be interested in your finding.

For one, have you ever heard of an instrumentation Op-amp?

As far as your question:

You have to have an open mind and a good system to hear these things. which are you lacking?

Quiet frankly neither. I have invited you countless number of times to come and judge my system and my approach for yourself and you refuse it. Let's try it again. Come over this Saturday and I will return the gesture by going to your house on Sunday to listen to what you bring to the table! Fair enough?

Carlos, frankly I do not believe you have any degree in physics, which by the way was one of my undergraduate degrees. I would believe an engineering degree, in particular in EE, where you are taught that all is know about electronics. And as far as designing for NASA, forget it. I know an ex-NASA electrical engineer who now does tube audio design and who has an appreciation for the limits of our understanding, which your education seems to have been remiss in giving you.

Good luck with your tilting at windmills book and don't bother to send me a copy.

You don't seem to understand that no one cares what you have to say, as you seem wholly ignorant.