The Aleph guy is pretty close too, right? 
 
They clip at 1 ohm at 10A, so that would be 100W @ 1R, but nominally with reasonable distortion it's 25W @ 8R and 50W @ 4R. 
  
They only have 15dB gain, hence another reason for the mono blocks. 
 
I drool over this page: 
 
http://www.firstwatt.com/prod.html 
 
The best FW amp would be a Aleph JX (DIY only, and even then there isn't an official schematic released), you'd need serious heat sinking and transformers though.