If large numbers of FETs are your thing, you might be interested in The Beast with a Thousand JFETs [1], a discrete audio amplifier dissipating about 140 watts

If large numbers of FETs are your thing, you might be interested in The Beast with a Thousand JFETs [1], a discrete audio amplifier dissipating about 140 watts per channel and producing output power of 70 watts with a 2 ohm load. Other articles/designs by Nelson Pass are certainly interesting as well. I'm not much of one for audiophile stuff, but he has a knack for interesting designs. [1] http://www.firstwatt.com/pdf/art_beast.pdf http://www.firstwatt.com/pdf/art_beast.pdf