Why not batteries instead of power supplies?

I'm surprised nobody has brought up or suggested supercaps. Those things have insane capacity, very low internal resistance, huge voltage capacities, and charge very rapidly. A lot of you folks probably have supercaps in your digital gear already since they're replacing mounted batteries left and right. You could feed a bank of those the lumpiest, ugliest power imaginable, output those to a conventional RC filter supply, and you'd have a very clean, albeit massive power supply. 

I'm surprised nobody has brought up or suggested supercaps.

I think voltage rating is too small for them to be used as poweramp supply caps. Only 2.7v unless that's changed in the last year or so.

Cheers George

Cost!
http://www.mouser.com/Passive-Components/Capacitors/Supercapacitors-Ultracapacitors/_/N-5x76s?P=1z0x...

Wow it’s been a while, since looking at them. And you can get 48v 83 farad for a "cheap" $1,300 each you’ll need two. Great ESR as well,can you imagine the inrush current!!!!!!! No BS boutique ac voodoo fuses here, you'll need massive circuit breakers
http://www.mouser.com/ProductDetail/Maxwell-Technologies/BMOD0083-P048-B01/?qs=sGAEpiMZZMuDCPMZUZ%252bYl9uUUNJQGTDeS0ZKH5mj4e4%3d
Wonder who’s going to be the first linear amp manufacturer to start using them, my bets on Dan D’Agostino .

Cheers George

If memory recalls, I think Vinnie Rossi already uses this technique in his LIO amp, one of the reasons why it sounds so good. Two sets, one set is used while the other is charging and they switch back and forth as needed.