Should Subwoofer Be Plugged Into Same Circuit?

I am running electrical lines for my theater myself. Should I make the outlet for the sub on the same circuit as the rest of the AV equipment, or put it on a separate circuit?

i could have sworn I read something that said it needs to be on the same circuit to help prevent ground loops.
I do wonder if AFCI/GFCI outlets hurt an AV system.
I was wondering about that, too.
To avoid ground loops, power connections of all devices should be in a star connection and as short as possible, without obviously exceeding the power capacity of your socket.  So, to get as close to this configuration as possible, it is better to connect all your devices to ONE power socket.

If however, your sub is wireless, this does not matter.  I have mine at home wireless and therefore can plug it to any socket I want without any hum issues.
It should be a law of audiophiles that everything should be plugged into one outlet. That is the best way to eliminate ground loops. And sometimes the only way.
If the system is wired so all the grounds home to a single point, multiple outlets are fine. Recording studios have dozens of outlets with amps, mics, effects, recorders, etc. plugged into them. Ideally with balanced lines and screen lifted at destination. Every studio I wired or fixed was dead quiet with the monitors on S T U N.

Many powered subs do not use a grounded connection, so an additional extension outlet is fine. If the sub is grounded and unbalanced, I'd be wary of a branched line. I've seen grounded unbalanced monoblocks plugged into the same socket hum a little while individually each was dead quiet.

The power loss between ≈50 foot run of 10 and 14ga @ 14A [≈1700 watts] draw is an inconsequential 0.17db. See

A Class B resistive breaker has a 3-5x multiple of rated capacity [For a 15A breaker that is 45-75A or ≈5000-9000 watts] for a couple of seconds. Your voice coils are vapor by then. See

IMO, there is no need for GFCI in a HiFi as there should be next to no chance of water at the equipment.
So if I read between the lines ieales you are saying a 20 amp circuit is unnecessary.

i was curious about the gfci because unfortunately my theater back up to my washing machine in the other side of the wall and has water lines running above it. That’s the trouble with a theater in the basement. Of course a gfci isn’t going to do any good of water is leaking all over the equipment. Lol 
Subs are typically Class D.....don't use much electricity at all  Craigert...I have a gizmo called FloodStop on my water heater, washing machine, water conditioner, etc.  If it senses water on the floor, it immediately shuts it off.  Easy to install....very effective. Get it at Home Depot.