B9Scrambler
Headphoneus Supremus
agree with you to the extent they don't say kz iems are the best!
well the qc is poor you can't deny that
I've actually had really good experiences with their QC. Of the 20+ KZs I own, and the many others that have passed through my hands before being gifted, only a few have had issues. I bought old DS stock after the earphone was discontinued. That one has a massive channel imbalance and is virtually useless. My Micro Ring (also old stock after they were discontinued) arrived without one of the housings glued together. Easy fix and still going strong. The cable on my original ED8 died at the jack. My fault. It got caught on the same drawer handle that killed the cable on my W1 Pro. You might toss the ED4 in there with the inline mic that picks up the remote's button rattling around making it useless for phone calls. I would say I've been pretty lucky and that my experiences do not reflect poor QC. Others definitely have not been so lucky (arriving with dead channels, housings splitting apart, etc.). Still, these are all issues that happen with more established brands and more expensive products.
One thing I will definitely criticize KZ for is being inconsistent with their individual models and making little tweaks and changes here and there. At least three ZS1 variants (if you include the ZS2), four or five ATE variants, ED2/EDse confusion, silent revisions to the ANV, etc. etc. It's very annoying because you'll read drastically different comments on the same product. Take for example my two silver ATEs bought when first launched; they sound pretty similar to my HDS1 (less midbass though, and more rolled off at either end) which is generally considered one of the more balanced KZs. I would say the ATE is a mid-forward earphone. Check more recent comments in the KZ thread and that's definitely not the general consensus, haha.