Thanks for all the answers, I am in the know now. I wired 3 direct lines all on their own breakers. 2 runs are 10 guage , the other one is 12. I shall have to open the box and check the breakers for their size./
Timrue, don't worry , it's quite a simple and straight forward process running direct lines , I wasn't sure however what was meant by the term 20 amp circuit.
I would imagine that a high current solid state amp would benefit from a 20 amp circuit on its dedicated line , would that be a safe assumption?