my systems sound fades in and out, breand new n3, everytime i touch the rca cable the sound is distorted anyway to fix

Just had the same prob with my N2... I replaced the rca cable and it was as good as new.

i had a Zapco SEQ installed, then removed and wire straight to amp, everytime the rca cable moves the sound is distorted, fading up and down

Did you try different cables?

If the audio changes when you move the cable- it is clearly a connection problem.