My Headphone hifiman He400s all of sudden have volume louder on one side and lowered on other side.swap cables still same. Headphone specs says 22ohm thus I get 22ohm measuring one driver to connector while the other connector on the other turn out 44ohm. So I figure add some flux melt solder...

My he400s after a year is imbalance ., by any chance any interested in swapping the drivers and hopeful we can have a mutual driver that is balanced. One side is louder and one is lower volume thus swapping makes a pair loud and a pair of lower volume hopeful resolve both our issues. I have no...

Anyone use Cold Heat successfully or easier than regular soldering iron? I mean those Audio 2.5 mm or 3.5 mm quad pole connectors are so tiny need instant fast heat and steady hands to do before the plastic layering melts too fast.