Power supply to Amplifier

Al is correct in that you have to have protection for when you forget to unplug (obviously the best) your equipment and a lightning storm descends up on you (it will happen). I have Brickwall unit(s) for this as well. Elizabeth is right in that you need to get the big (PS Audio P10) units so they have the umphh to drive your amps easily if....as Charles1dad says, dedicated outlets aren't possible or adequate. Living in Atlanta, a P10 made all the difference in the world for me while a nearby friend who has the street transformer right outside his house, running directly into his house, benefitted little. It does depend. (Now, how diplomatic was that!) I own seven Brickwalls and two P10's so you could say I have bought into this approach.

I use Furman Elite PFi 20 conditioner. It has very tight non-sacrificial over/under voltage protection with circuit breaker. It provides separate filtered outputs for power amps, preamps and video. I don't experience any loss of dynamics perhaps because it uses Power Factor Correction - that consist of huge inductor and capacitor. By storing energy they not only smooth-out supply current, making it look like resistive load, but also can deliver large peak currents to load (55 amperes max). If I remember correctly Elizabeth uses Furman Reference series conditioner that is even better, providing complete isolation and therefore additional common mode noise suppression.

I agree with Minorl. You want a dedicated power source to make sure that 100% of used power is going to your amp and not shared with other devices.

You also want to isolate your amp voltage source from noise coming from other ground wires. I have used dedicated wire and circuit breakers on my Krell monoblocks and they just sound fabulous.

If you have the money, use the best AC power cable and receptacle you can buy for your amp, they make a difference. I'm using Shunyata Anaconda CX series power cords on all my audio devices and Furutech AC receptacles as well.

AC receptacles are often neglected by audio enthusiasts, I got much better bass (tight and resolved) using audiophile grade AC receptacles.

A surge suppressor will do NOTHING to protect your amp if you suffer a lightning strike. The ONLY solution is to yank the cord from the wall outlet before the lightning hits.

And 'most every competent amplifier design incorporates surge suppression into the design.

So, IMHO, surge suppression is a waste of money for today's amps...