So, just 2 hours a day of listening, every day, for three months, before it has 'burned in'. Personally, I would have forgotten what all my other equipment sounded like. What on earth does it have in it that it takes so long to reach its peak?
I've found burn in to effect most though not all components I've run. The only exceptions where the gear has not changed to my ears has been Afterdark OCXO clocks (they do have a warm up/stabilization time however), the Soundaware D300REF streamer, and Accurate Audio Ultimate D1000 DAC. All prior DAC's, amps, preamps, phono stages, cables, filters etc have show changes with burn in though I've found there are exceptions to the rule. The D1000 was stunning out of the box so I don't mind that it didn't change one iota with use. That was odd though as it's a discrete R2R implementation also with FPGA control. My prior Musician Aquarius saw large changes but still wasn't to my preference after months of burn in. Not enough bass weight and body.
No I don't disregard measurements and believe they can be a useful tool to figure out issues at times though measurements won't sway my purchasing decisions. If the R7HE Mk2 betters the D1000 I'll keep the R7HE Mk2, and if the D1000 betters it then the inverse is true. Music taste is purely a subjective pursuit so it makes sense that equipment choice is much the same.
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