|Originally posted by darkclouds
I remember you saying the the tj mesh 300b was a definite improvement over the stock valve art tubes. Now if you can hear the differences between tubes, I thought you'd be able to hear the differences between a $200 amp vs a $1600 amp.
Also, if you're now saying that the AQ1005dt with tj meshh 300b sounds the same as the wave 8 with stock tubes, then that means the aq1005dt with stock tubes sounds worse than the wave 8?
I realize that there is a significant discrepancy among my reports. But, it was really not possible for me to do a close comparison among the two types of 300b tubes. The time difference between letting tubes cool, and plugging in and warming other tubes was considerable, and thus I had to rely on my "hearing memory." Thus in accordance with the excellent writings by John Dunlavy that you posted earlier today, he refers to "the old Placebo-Effect," of which I may have suffered. As for a critical comparison between the Waves and the 1005dt for driving the K1000, this is really the first time that I conducted such a test. In the current test I was actually able to make almost instant A/B changes from one system to the other. I held in one hand the connectors from the stock K1000 cable and the Stefan AudioArt cable, and I quickly and repeatedly plugged the K1000 headphone into one cable, and then into the other. I did this with my eyes open, and critically listened to the sound. And, I also did it with my eyes closed, and randomly interchanged the connectors in my hand. With eyes still closed, I connected the K1000 headphone into one connector, and then the other, and I did this again and again. I tried very hard to identify which connection gave the better sound. The result was that I was totally unable to pick one cable (with associated amp) over the other. I realize that these were not very sophisticated tests, and obviously I hoped that my much more expensive equipment would prove to be clearly better than the less expensive equipment, but I could not hear any difference. BTW, I urge others to read the very excellent report regarding cables by John Dunlavy to which you referred in your other message. The URL of this article is: http://home.austin.rr.com/tnulla/duncable.htm
John Dunlavy makes the following points in his article:
- That those who claim to hear differences between cables do not fully grasp the power of the old "Placebo-Effect."
- That we have heard of golden-eared audiophiles who claim to be able to consistently identify "huge audible differences" between cables. But when these experts visited John Dunlavy's facility, and were put to the test under carefully controlled conditions, they invariably failed to yield a score any better than "chance."
- That during the "comparisons" (without actually changing cables), some listeners were able to describe in great detail the "big differences" they thought they heard in bass, high-end detail, etc. (Of course, the participants were never told the "naughty truth", lest they become an enemy for life).
- To say, as some do, that there are factors involved that competent engineers and scientists have yet to identify is utter nonsense and a cover-up for what should be called "pure snake oil and buzzard salve" - in short, pure "fraud".
darkclouds provided the following reference to the preceding excellent information by John Dunlavy: http://home.austin.rr.com/tnulla/duncable.htm