Plug Amp directly to Mains or use a Power Conditioner?

Unfortunately, like most, you ask the question after you already spent your money.

The company that changed audio understanding of power supply is PS Audio. No matter what you think of some of their other equipment, they understand power and will clean up your power while non limiting your amp’s ability to respond to dynamic and bass situations. They are what others compare themselves too. May power "conditioners" do more harm than good. Some are just snake oil.

i recommend the Power Plant 10. This is one generation old but I saw an interview where Paul himself said "maybe the PP10 is better than the new PP12 for amps."

PS as for yoru home’s electrical system, one thing you can do without too much trouble is figure out what else is on the circuit with your system. Move as much as you can. Maybe there is a circuit 20 ft away with nothing on it and you could make get a 10 awg power cord long enough to reach it. there are inexpensive actions you can take. Figure out what gauge your house is wired with will help you usnderstand where you stand.

PPS  Funny story Before I installed my dedicated line I had my system plugged into the wall.  I decided to figure out what was on the circuit.  Well the laundry room is behind the wall and the circuit was the GFCI circuit that runs to the laundry room, every bathroom, the kitchen, the garage, and every outdoor outlet.  One circuit.  Lots of junk on it. 

Jerry

I was once almost exactly where you are at (house built in the '60s, many of the outlets ungrounded, antique electrical panel)..  Is your electrical panel an antique and if not do you have any space left for another circuit?  It would not cost thousands to run another line. 

Well, when the PC arrives, plug it in, give it a few hours to warm up, then try listening to your reference tracks with your amp plugged into the wall, then the PC, then the wall again. Then let us know how it worked out.

Thanks all. I guess

I left off some details about my question. I have read in various publications that an amp has internal voltage regulation that could be adversely effected by external power conditioning. If that's the case, in general, I would still plug the amp into the mains. I bought the power conditioner primarily for my source equipment.

Taken from the '10 Biggest Lies In Audio'

Just about all that needs to be said on this subject has been said by Bryston in their owner's manuals: "All Bryston amplifiers contain high-quality, dedicated circuitry in the power supplies to reject RF, line spikes and other power-line problems. Bryston power amplifiers do not require specialized power line conditioners. Plug the amplifier directly into its own wall socket."

What they don't say is that the same is true, more or less, of all well-designed amplifiers. They may not all be the Brystons' equal in regulation and PSRR, but if they are any good they can be plugged directly into a wall socket. If you can afford a fancy power conditioner you can also afford a well-designed amplifier, in which case you don't need the fancy power conditioner. It will do absolutely nothing for you.

@motown-l 

I left off some details about my question. I have read in various publications that an amp has internal voltage regulation that could be adversely effected by external power conditioning.

did they mention what amps by chance ?

what amp are you using ?

When I bought my now 70 YO house, some 26+ years ago I had a 20 amp dedicated line run from my elec panel directly to the 4 plug outlet for my system. I ran it outside, digging a several foot deep trench

@carlsbad I had a PSA Premier Power Plant plugged into my dedicated line. It really did NOT improve the sound. Lots of PLCs in between, I have a Core Power 1800, which DOES

There was a post to this thread that was deleted and it hd a link to something sort of like "the dangers lurking behind your walls" or something like that) & it was about old &/or bad wiring. This got me to thinking, as like the OP of this thread, I own a house built in the ’60s and when I bought it it did have the old style fuse box and there is one circuit with a few outlets WITHOUT the 3rd wire (ground). Is there a good chance there is some knob & spool going on here, and would I be able to see that by pulling one of those outlets and would I be able to identify it from what wire I could see from the removed outlet?

OOPS!  On edit:  wrong thread.  But I'll leave the question up anyway.