Does anyone know how to build your own headphone amps?

[sickdrummer]

hi,
there are alot of sites for making your own
cables and stuff but does anyone know a site that can tell you what you need to buy to make a single headphone amp? or does anyone know how to make your own? im not cheap or anything just wanted to see cause it would be kind of cool just to make my own becuause i make all my own cables and stuff as it is now?
thanks

 

[Ziller]

check this out, there some info here

http://headwize.com/