I'm guessing that covid restrictions or other difficulties due to the pandemic have messed up whatever usually goes on at sennheiser's factory in china. This level of quality control is horrible.
Hmmmm, MAYBE that is in fact what's going on. I hadn't thought of this before. Evshrug, you said Sennheiser is looking into these issues, right? I hope we hear back from them soon about what the heck is going on. These are far more frequent QC complaints than I've ever seen about Sennheiser headphones in the past, and I'm honestly confused about it.
I hadn't considered that the factory being in China could very well mean that issues relating to the pandemic could possibly be the cause of this. Are these QC issues truly "rare" after all? We have people here who have gotten
two pairs of HD560s in a row that had these issues, and now someone who had this rattling/buzz issue with a pair of HD560s, got the 599's instead only for them to have even worse issues, and that person has now given up on Sennheiser entirely. Clearly there is
some kind of
actual problem going on at the factory in China.
And it's reached the point that Sennheiser is losing business because of it. They need to be made aware of this. I hate to keep bothering you, Evshrug, but you are our contact with the company on here; each person individually reporting their issues to Sennheiser won't be able to show the company that there is a (bad) trend going on with the QC of their HD5__'s series headphones, they need to hear from someone affiliated with the company that this is an ongoing, now far-too-commonly reported issue.
This is all very bizarre to me, as I know that
the first couple production-runs of the HD560s had no issues, with nobody reporting any of these problems with loose screws (but PLEASE people DO NOT OVER-TIGHTEN THE SCREWS IN YOUR PAIRS out of fear of this, or you will strip the screws and create issues that weren't there), driver-rattle, etc. It seems that the issues have arisen only with the latest production-run. With the first couple batches of these, people only had positive things to say (except for those who found the treble too bright for their tastes). Now all of a sudden with the latest batch, we have all these people reporting issues. So it seems to just be the very latest batch of the HD5__'s series models that have issues.