Do I need 10 gauge power cord if I have 10 gauge from panel?

It seems unlikely. Component power supplies are usually built with capacitors lage enough to store power beyond their staedy state demands, and supply power for transients much closer to the output devices than the power cord is.

When your why do people always think the power cord is the last 6 feet? If your amp draws the current wouldn't it technically be the first 6 feet? After all if your amp is plugged in and not powered on how much current is on the 15 or 20 amp circuit? 

@alerrico Wrote:

For the huge 30 AMP monster AMP I would run dedicated circuit with double breaker. It already has a 30 AMP NEMA plug to prevent plugging into a standard 110 outlet.

FWIW: I run the Crown studio Reference 1 Amp on a 240 Volt 20 Amp dedicated circuit with a dedicated 20 Amp double pole breaker, per Crown’s recommendation. 😎

Mike

Electrical wires directionally created? Ie. Does it matter which direction wires are installed between the panel and the outlet??

Wow, so many of my posts deleted, including banal one's about math.  Hah.