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... You say you play two musical instruments. It is your experience which will govern what you choose to buy and why - not 'measurements or DB trials'. So, regarding 'bias'. Yes, of course you would take price into consideration, of course you would take how the instruments look into consideration, of course you would take the Brand name into consideration. No one is denying 'bias' or the effect of 'bias'. But, all of those would have paled into insignificance if the musical instruments did not 'sound' or 'play' well enough for YOU - not anyone else !!!
I enjoy playing musical instuments for relaxation, and creating good music/sound. I would choose an instrument based upon how it sounds 'right' in my own mind. That may not be too different from picking audio gear too, but I compare the sound of the audio gear to the memory of the instrument sounds. On the other hand, if the memory is imprecise, then my choice of gear may be 'wrong', but still enjoyable both because I like it and because I would not know that I am wrong. Science may provide an improved way to judge, or it may not; things are not hard and fast, IMHO. But one thing I want from a audio system is accuracy, the meaning of "Hi-Fi". That means an accurate system must be fed the best material (recordings).
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>>> "Yes, journalists report on the tweaks and the sound, among many other things. There's a difference between reporting and concluding." <<<Again, Of course. But, surely most intelligent people realise that the journalists are REPORTING on what they have experienced (not actually giving final conclusions). But, WTL, you started with the word 'tweaks' in that sentence and then, in the next paragraph, the example you gave was of comparing the difference between two amplifiers (which is not really discussing 'odd ball tweaks'). I specifically chose the list of 'tweaks' I gave because they are VERY controversial, (as opposed to the difference between two amplifiers), have been (subjectively) heard to be effective and described by many, many different people, in different environments, with different equipment over quite a number of years and Michael L's article specifically made reference to one such controversial 'tweak'.
Yes, May, I referred to 'tweaks' like that of the fuses in the speaker line. The difference in two amplifiers is a speculation on whether the pre-amp has influenced the test unbeknownst to the listener comparing amplifiers only. The degree of difference heard may be akin to the fuse tweak. Sorry if it was a round-about way to bring a few points to the table, perhaps not as clearly as I would have liked.
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Yes, you described a couple of experiences of your own and you said that, on one part you agreed with Scott's reaction and you were "apologetic" because your experiments were not fully scientific. Excuse me, sir, but why would you be apologetic ? You say you play two musical instruments. Would you be as apologetic if Scott dismissed your experiences in choosing your musical instruments as "anecdotal" because you did not have scientific PROOF as to why they sounded good to you ?
Well, Scott is entitled his opinion as to dismissing anectdotal information. Heck, there are other cases where I would dismiss such information too. I actually did originally dismiss the fuses thing, and tried it, and heard a difference and asked myself 'am I hearing things?'. Following up with the SBT test with my friend as the test subject, I felt that my experience had been validated. Didn't mean it to appear apologetic, but I wanted it made clear that the test did not make the grade as a scientific study, but was informative to me (and just as Scott wrote, if I recall, and I agree with him). What I disagree with Scott is that my SBT test that he apparently dismisses, I no longer would dismiss as I had in the past. It would be nice to get some scientific proof, pro or con, and put the matter to rest once and for all, for everyone.
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You WTL would be able to discuss the effect of passive components on the sound with someone as technically competent as Martin Colloms (even though both your experiences would be 'anecdotal') but would not be able to discuss the same subject with such as Scott - even though Scott would, presumably, regard himself as coming with the balanced 50%/50%. Scott, in his own words, dismisses 'anecdotal' experiences as not scientific.You, WTL, would have been able to discuss such as the directionality in some cables with technically competent people like Julian Vereker of Naim and Bob Stuart of Meridian (even though all your experiences would be 'anecdotal') but would not have been able to discuss the same subject with the well respected (technically) Peter Baxandall - even though HE would presumably have regarded himself as coming within the balanced 50%/50%.
May, you give me much too much credit of my knowledge. I can discuss some of these things from what I know and learned. But I also found during my grad studies leading to a doctorate degree, there is so much unknown out there that many who have not ventured this far know not what they're ignorant of. Some gain this insight much earlier than I did; others have not reached there yet. Unfortunately, too many use what they think is a lot of knowledge and make the most noise about it, sometimes setting back real progress. I tend not to make noise unless I really can discuss at a reasonably similar level as the experts (take j-j for example, he appears to know more about coding, hearing perception studies than I; take John Atkinson, who is well experienced in the audio field and makes measurements, more experienced than I). To these people, I ask a lot of questions to get a better understanding of what these experts are saying, then make up my own mind whether they really know their stuff or are just making noise. Those people you named above I do not know personally, but they sure sound like they know a lot more than I about what they do. Remember the saying: 'It's better to keep silent and thought a fool than to speak out and remove all doubt'?
Yes, Scott has wrote that he dismisses test like the fuses one I did as non-scientific, and I agree - it's non-scientific enough. There's more to be done, and I didn't continue farther because I was satisfied that I got confirmation of my experience. Sure, I could have asked ten more people to do SBTs to see if the single-subject result was not a fluke, or controlled more variables. That would have been more scientific, and I'm not afraid to say so.
As for the directionality of cables, I have heard that there may be a reason for this construction in some cases, although I too would have dismissed this idea in the past. I use custom-constructed cables with directionality, based upon a friend's recommendation, a person who I think is a lot smarter than I. Did I do the calculations to see if the theory predicts better performace? No, as it would take me too much time to research figure out and it's easier to depend on someone who I know. There are those on the forum who are highly trained electrical engineers who can do the modeling and calculations. I went by the sonic improvement based upon my years of listening experience with my system before and after that 'tweak'.