Hey if you wanna know anything about Kurt Cobain’s gear go to this web address
I stumbled across it when I was on the Nirvana internet fan club website.
As for the whole cabs and power amp thing, I don’t know, except on a few pictures I’ve seen of Kurt’s rack, it looks as if hhe has 2 power amps. Maybe they can only power 4 cabs each or something. This could be the case, coz Billy Corgan used two power amps for Mellon Collie and the Infinite Sadness (apparently he basic sound of MCIS was a Marshall JMP-1 preamp combined with an Alesis 3630 compressor into two Mesa/Boogie Strategy 500 power amps. The Strategy 500 power amps are each 200 watts.)
Seeing as I don’t have a band or anything I just plug my boogie into my little Kustom 10 watt amp (incindentally the worst amp ever made – it hasn’t even got eq controls) or this 65 watt peavey combo I’ve got.
If you do decide to use a power amp, a solid state one might be a good idea as you don’t have to change any components ever really and they last real long. However, valve ones sound a lot better in my opinion, but they’re usually more expensive.
Also one idea if you want to go really loud, and you like the sound of your Peavey is to run it into a power amp or two, if your head has an external speaker socket or two then plug a power amp in there, and use it to power your cabs.