never have problem with CLIPCORD, i try for a while RCA, is very good connection, but i get problem, with machine vibrations push me out the plug, only on coils, for rptary is awesome, sure, specially the ANGLE RCA PLUG, reduce the size

another point that i prefere normal CLICORD to RCA , is the EASY HANDLE, with normal CLIPCORD, u can put down on the table the machine and with the same hand u can take out cord and go to another machine, with RCA for remove the plug u need use booth hand, u cannot done with 1 only, sound stupid things, but i work very fast and this small detaill for me don work

anyway, RCA is very good, for sure, and MONO JACK even better, maybe in future more machine gonna use this sistem