Some peoples systems are so very highly resolving that those systems may reveal minor improvements like this or fuses, etc. whereas others may have weak links in their systems making any small improvement negligible.
Also, everyones hearing and listening skills vary tremendously.
Lastly, perception of sound is not entirely understood and if you think you hear something, you do, even if it is not measurable. Everything can't make a huge difference, but if you think it does, who am I to argue, especially without trying it myself.
Bottom line - I would not spend $349 on contact enhancement liquid, but if you've got $50K or more invested in your system, it is hard to get an audible improvement for that amount of money. Plus, some places offer a money back guarantee.
Also, everyones hearing and listening skills vary tremendously.
Lastly, perception of sound is not entirely understood and if you think you hear something, you do, even if it is not measurable. Everything can't make a huge difference, but if you think it does, who am I to argue, especially without trying it myself.
Bottom line - I would not spend $349 on contact enhancement liquid, but if you've got $50K or more invested in your system, it is hard to get an audible improvement for that amount of money. Plus, some places offer a money back guarantee.