Dedicated lines wire choice

@ fruitloopsr, 240 Volts 10/3 Awg, 120 Volts 10/2 Awg. :-)

Run one line not two. https://systems.audiogon.com/systems/8367

If you use the red wire for ground you need to mark them with green tape and in some areas that still might not be code, best to check.

Would the metal clad be better than romex or no difference  I want 2 lines 1 for front end and one for amps Guess i could use 12/2 for front end
Also would like one for my sub, It is M/L B212, 12/2 for that? Going to use 10/2  on amps i guess,.They will be several feet apart At one time i had Krell amps
 10/2  on a 30a breaker with no problem, I will be doing the work myself.
Do not know code in florida but i will take a look.
Thanks, Mike