I thought I might outline my point of view on matters like some of those expressed above to provide some perspective. It will be easier to accept or reject my point of view if you understand the factors that influence it.
When attending college, I took every single electronics course offered. I once gave a technical presentation on the use of a Hewlett Packard vector impedance meter and noted the entire electronics faculty was present. It appeared that none of them had any idea what it was or what it was used for. So I felt I had a good handle on basic electronics. Yet I somehow felt that I had no idea how to put it to practical use.
Before graduating, I started my first business, a recording studio. Money was in short supply and we bought used gear exclusively. After about six months of studio construction, money was in short supply. We finally fired everything up and sunk into a deep depression. The recording console we purchased was terribly noisy. But we had invested every penny we had in it and had no money left to replace it.
So we did the only thing we could. We ripped out every single wire, capacitor, amplifier, volume pot, etc. in the entire recording console and re-designed it from the ground up. It turned out that I actually could put all that theory to use in the real world!
I worked as a recording engineer at that studio and quite a few more over the next 35 years. I also had the very good fortune of working with quite a few other talented recording engineers during that time.
The funny thing is, I don't recall recording engineers ever discussing the merits of this speaker cable or that, the value of cryogenics, boutique caps, special binding posts or anything of the sort. Don't get me wrong, we worked with some very good recording equipment. But my experience tells me that most recording engineers would take a rather dim view of some of the theories espoused in today's audiophile world.
The thing is, these studios are often where the music is created in the first place. And the signals being processed are mic and line level for the most part - far more critical than speaker level signals. So the basic question I ask is, if these issues are not that critical in the recording process, why would they be more important in a relatively simple playback system - a system designed to reproduce the same signal being recorded in the first place?
Most people trying to assemble a great audio system do not have unlimited funds to invest. So before I can recommend expensive speaker cables, as an example, I have to prove to myself that the gains, if any, justify the expense.
I can't base my opinion on statements like, "I just tried cable "X" and couldn't believe what a difference it made!" As I have mentioned in the past, cognitive dissonance will force the brain to hear improvements that, in reality, may not be there. It's not that these people don't hear a difference, they really do. But that difference, in many cases, lies solely in their brain. Where cognitive dissonance plays a role, a disinterested third party would not likely hear the same increase in sound quality.
So before I can personally recommend one of these magic cures, I need to rely on more than statements posted on a web site. I need to hear it for myself. And even that presents problems as, on many occasions, I thought I heard improvements only to have those conclusions fail in a blind test. I need objective tests to insure, to my own satisfaction, that I have eliminated as much bias as possible.
Do not misunderstand. I would love nothing more than to find an inexpensive (or even expensive) upgrade that really makes a difference. And I would not hesitate to recommend it if I did. But I need to have a high level of confidence that the improvement is real and not imagined.
I also should point out that because I lack proof that a given upgrade performs magic, that does not mean it does not. It only means I have no basis to conclude that it does. The only thing I can go by is my personal background and experience and I tend to be a sceptic until I can prove to myself otherwise.
Finally, if someone purchases such an upgrade and experiences great results (real or imagined), I have no problem with that. In the end, if you feel you got your money's worth, that is all that counts and I am happy for you.
I have friends who are very happy with and brag about their Big Box sub/satellite systems. I always like to reinforce those feelings as it makes them happy. If they are satisfied, that is all that counts. There is no need for them to upgrade.
If the poster above who feels a great transport is the most important component in a system is happy with his, that is all that is important. But his position does not jive with my personal experience, so I can't support it. It's not that he is wrong and I am right. There is no right or wrong as long as you are happy with what you have and the decisions you made to get there.
On the other hand, I am very often asked for advice and I take that role seriously. So I will tend to be more conservative and less likely to jump on the band wagon when the next miracle enhancement comes to market. I can only base my positions on my personal background and experiences, and, in order to be responsible, will tend to require a higher level of proof than some others. I cannot recommend someone spend money on something I would not spend my own on.
I will not necessarily be right on all occasions, but I will feel comfortable in my position (and quite open to change it if warranted).
Enough rambling...
- Jim