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?
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?
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.
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.