According to what I have read Kurt didn't use the Twin for Nevermind, but on In Utero and it was a UL model that you probably never hear a cranked sound from because of the stompboxes he uses for distorted sounds : http://www.kurtsequipment.com/selloutrr wrote:
The Fender Twin Reverb remains the most tracked guitar amp or all time. If you want to hear what one sounds like wide open all you have to do is listen to Nirvana's Nevermind.
But you may know something different, I just like to set the record straight because otherwise I'm walking around thinking things like that Townshend used a 3X10 Bandmaster on a lot of Who's Next, but can't find a source and don't know where I heard it and have no idea if it's true or not.