i have 3 questions that need answwering :
1. to check distortion on a preamp rcas ouptut would i just plug the rca of the radio in to the dd-1?
2. after i find the clip point on my radio do i turn my volume up to that point to set 3sixty clip point or the DD-1 is needed and how do i use it to set clip point?
3. how would i set the gains on my amps with 3sixty inline of the amps?