I have had one big issue with these and that is the cable that plugs into the earpiece (which i then connect to an amp) frequently loses connection with the earpiece and cuts out the sound

Constant cut out/faulty connection

neither connection is secure, i lose connection if i move much at all

I'll either send them for a refund or get out the screwdrivers and see if I can find the faulty connection, if that's what it is

As if the connection is no good

neither connection is secure, i lose connection if i move much at all