Questions manufacturer iems and defects

[jobas77]

Is it rare or common for IEMs to leave the factory with a defect? For example: KZ EDC Pro, GK Kunten, KZ EDX Pro IEMs

To reach the end consumer with a defect.

 

[staticV3]

Who can possibly answer that question? And based on what data?

The manufacturer can't, because if they were aware of these defects due to QC, then they obviously wouldn't ship those defective units to customers.

And neither can customers, because no single customer, nor a group of them, can ever acquire and methodically test enough units to give statistically significant answers.

 

[Somafunk]

I think it is perhaps time for a moderator to step in and prevent jobas77 from creating new threads. @RickS ?

It’s either a bot created account or someone suffering from an illness of some type as they ask and post the exact same titles and questions word for word across a few forums using different user names.

I won’t link to the exact username in case of illness but they are on headfi

 

[Jiraya369]

headfi

being on head-fi is a bit of an illness tbh

 

[Somafunk]

being on head-fi is a bit of an illness tbh

Oi!….i resembles that remark

I joined way back in 2003, but with my electronic/mech engineering degree brain firmly attached to my shoulders I don’t really fit in all that much and I’m very much a view through my fingers type user of it.

 

[Jiraya369]

Oi!….i resembles that remark

I joined way back in 2003, but with my electronic/mech engineering degree brain firmly attached to my shoulders I don’t really fit in all that much and I’m very much a view through my fingers type user of it.

yeah it's all a circlejerk anyways, people there genuinely believe headphones are better than speakers and some think iems are better than headphones. And ofc all the source rolling nonsense is just infuriating. If that werent bad enough, they get loads of free stuff that is suspiciously expensive and somehow all of em sound musical yet cheaper stuff is just too analytical.

When even "normal" users post paid/sponsored reviews, of overpriced garbage, i find it hard to take it seriously at all. Very few there seem to be level headed from my experience and if you are, unless you're quite strong in your beliefs, you'll start believing their nonsense, i've had a few folks who initially believed in measurements come to me with questions that arose from believing in all that bullshit that others there are spouting. Quite terrifying how easy we are to influence/bias.

 

[kemmler3D]

Is it rare or common for IEMs to leave the factory with a defect? For example: KZ EDC Pro, GK Kunten, KZ EDX Pro IEMs

To reach the end consumer with a defect.

@staticV3 is correct - only the manufacturer knows the actual defect rate. Forum posts and reviews tell you nothing, maybe less than nothing, because users with normal units do not seek venues to announce that their earphones are working normally.

However, I can tell you that in the industry defect rates under 1% or even 0.1% are the goal, but defect rates much higher, even in the double digits, are not unheard of. In other words you do not need to beat lottery-winning odds to get a defective unit, especially when there are multiple drivers in a given housing.

As I've said in other threads, don't worry about defect rates. You can't predict when you will get unlucky. Instead, worry about service and support - what the manufacturer does to help when a unit is defective.

 

[jobas77]

Q.C. Passed is box iem is good or bad? is related manufacturer defects?

 

[staticV3]

The IEM is both good and bad until you open the box, at which point it will manifest as one of the two.

 

[Sokel]

The IEM is both good and bad until you open the box, at which point it will manifest as one of the two.

Schrödinger's IEM