Among the other speakers who have called these plugs eg as waste, only so much .....
If you want extra quality, then you should also look at extra-expensive and not in the least expensive !!
And who has overtightened the screws themselves to blame ...
1. you should twist the soul in the cable before inserting not, then can the screw also reindrehen easier.
2. highly conductive materials such as copper, tin, silver are simply not a steel !!
So up to 4 mm², these plug EXCELLENT !! As for the impact in terms of the sound, I can not say anything, because I lack the necessary measuring instruments to the
to judge. Here would plug with a high silver content be better .... but at least 10x expensive!
