@inagroove I think you’re reading the article accurately — insofar as it deliberately leaves the physical question open and calls for empirical work to settle it. Did the article promise "universally real" determinations for which you criticize it? My read is that the article’s own framework predicts variable results across individuals and equipment types — that’s not a weakness, it’s the finding. The more useful question isn’t whether burn-in always happens, but whether controlled studies can isolate when and why it does.
@jmalen123 Thank you — genuinely appreciated. Your point about age and hearing adds a real layer of irony to the debate. The people with the most experience and refined judgment may be the least physiologically equipped to detect the smallest differences, while younger ears that could hear them haven’t yet developed the contextual knowledge to know what they’re listening for.
Regarding Toole: Great reference — thank you! As I read it, the study found that small physical changes in loudspeakers do occur during burn-in — measurable shifts in frequency response, harmonic distortion, impedance, and resonant frequency — but these remained within industry tolerances and produced no perceptible differences in blind listening tests. So the physical changes are real but apparently too small to hear under controlled conditions.
The correction about "average listener" seems fair, and the Toole point is worth taking seriously — but it cuts both ways. His methodology is built on blind testing precisely because even experienced listeners are highly susceptible to expectation effects when sighted. Better ears and better experimental design are different things, and Toole’s work demands the latter rather than simply endorsing uncontrolled audiophile testimony. Whether audiophile listeners have sufficiently lower detection thresholds to close the audibility gap the study identified remains a legitimate open question — but it’s not settled by noting that trained listeners generally perform better.
As I understand it, Toole spent decades establishing that listener preference and detection studies need rigorous blind testing protocols — not because listeners are incompetent, but because even trained, experienced listeners are reliably fooled by non-acoustic factors like brand reputation, price, and visual cues when they know what they're listening to. His research shows that sighted listening tests, however conducted by however experienced listeners, are compromised by expectation. That's why he insists on blind methodology.
Citing Toole to validate what audiophiles report from ordinary uncontrolled listening is a bit like citing a statistician's work on the importance of randomized trials to validate anecdotal case reports. The authority being invoked actually argues for higher standards of evidence, not lower ones.
