Pete7
Headphoneus Supremus
Each type of connector has their pros and cons. With 2pins you have to keep track of polarity and be careful not to bend the pins, while with mmcx it's easier to get moisture/sweat which can cause corrosion. But the latter one has also to do with a quality of the connectors. For example, both Westone and ALO/Campfire has been upgrading the connector material, while some of the cheap budget connectors (chi-fi market cables) fail sooner. Another problem I've been running into with 2pins, the standard has a bit of a tolerance room where it's not 100% universal when it comes to the actual diameter of pins and female sockets. I have a lot of brand name cables and IEMs, and still run into a problem with 2pin connectors of one cable needing to be forced into 2pin socket of another IEM. It loosens up after awhile, but clearly there is some tolerance issue. Also with mmcx connectors, I personally hate using them with hard memory wire and always remove it (like in Ref8 cable).
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