For sure i can say: replace the plastic pcb mounted allways for 10euro ones, not the 2 euro ones which wait nothing, but wbt is overkill. Hi end is bs, i have my master micro electronics and normal ofc has 1% advantage on standard copper and the superofc, which has zero use is only meant for liquid hydrogen and enbryo's , made for medical use. Total waste of money but the just believe in it. Especially with headgear it doesn't give a crap, normal your ear doesn't receive the sound that way, it's all munipulated, why care that much, since cans never sound good, which i mean natural. Everybody wants the best connection, but nobody uses flat sounding/real headphone amps.... so why bother about a connection