electronics manufacturer and after tests

[and77man]

Electronic products, for example: KZ brand headphones, after manufacturing, do they undergo any individual tests to prove that they are working correctly and without physical damage? Or do they only test some units from a batch?

I have some units sealed with plastic stored away

 

[ZipZapOuch]

Electronic products, for example: KZ brand headphones, after manufacturing, do they undergo any individual tests to prove that they are working correctly and without physical damage? Or do they only test some units from a batch?

I have some units sealed with plastic stored away

A place that spits out millions at $2 are not likely testing anything after they "dial-in" the manufacturing process. It would be much cheaper to just refund the customer or give them a free replacement if the manufacturing process has less than 1% defects. Also, when a customer knows that a good pair of headphones costs more than $50 and very good headphones can cost 10x or 20x that good price, a customer who buys $2 headphones is very unlikely to complain about any defect or poor performance. The customer is more likely to just pick a different brand for the next pair and not even worry about the hassle of replacing them or expecting any support from the retailer or manufacturer.

 

[VoidWalker77]

Most electronic products like KZ brand headphones go through a combination of batch testing and random quality control (QC) checks during manufacturing. That means not every single unit is tested individually. Instead, a sample from each production batch is inspected for sound quality, functionality, and physical condition.