My point wasn't about effects being so small they're imperceptible - it was that human perception is notoriously subjective (particularly in the audiophile worl

My point wasn't about effects being so small they're imperceptible - it was that human perception is notoriously subjective (particularly in the audiophile world where people tend to want to hear differences even if they don't exist), and an AP analyzer (or similar) would provide a much more rigorous way of identifying if an effect was present. As far as perceptibility is concerned, ABX testing is a better method for that, and it really doesn't appear the individuals in this article conducted their listening tests via that method.