No, that could create another problem. No power disconnecting means at the hard wired piece of equipment.
Is a disconnect required at permanently connected appliances? Generally, electric cooktops, dishwashers and the like don't have a disconnect at the appliance, just at the panel. That's also why they have to have dedicated circuits.
Like I said, for this to be kosher you'd have to "permanently install" your amps. That may be inconvenient, though only mildly so by audiophile standards.
And again I would not recommend Romex for this application but rather EMT or MC, which provide insulated ground as a bonus. I don't disagree that the latter, like so many other things, is misunderstood by many audiophiles but it does provide some benefits.