It is of good quality. I've been in the ovwr business for 20 years and have used unknown brands before. This is by far my favorite set. 1) They keep their zero. 2) There were no defects in the anvils (I saw one reviewer say they weren't parallel and for me they weren't) 3) After calibrating mine, they worked perfectly at all depths and heights. And yes, you need to calibrate them a bit. This is always the case, even if you're buying the best, so I don't see why people are complaining about it. 4) My standards were perfect. I checked. I don't call people who complain about this liars. I'm just wondering if they took the time to put them in a controlled environment and calibrate them properly. Just one thing to note! Disassemble and clean the microphones. You have a heavy oil that contains a few debris particles. After cleaning, lubricating and calibrating I am satisfied.
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