here you go
its better than a lot of other eddie current stuff I have seen
people that think that shunt regulated power supplies are better than really good linear supplies are wrong
the input stage is very familiar
really weak output stage with virtually no heatsinking
painted really cheap steel chassis
there are a number of ksa5 clone boards on ebay, some are mine and are obvious, but no one putting my board inside a chassis at the moment.
if you have to buy one now on ebay, this one is complete, the power supply is not as strong as the original, but its cheap
http://www.ebay.com/itm/Headphone-amplifier-Imitation-KRELL-ksa5-line-CPI-full-DC-amp-machine-ClassA-amp-/112050882595?hash=item1a16c0c823:g:61kAAOSwu4BVkJvH
this one has my board but a different power supply
http://www.ebay.com/itm/Finished-Kevin-Gilmore-KG-version-KSA5-headphone-amp-preamp-amplifier-HL-230-/142031703076?hash=item2111bfcc24:g:6GMAAOSwM4xXaLnE
this one is my power supply with a different heatsink
http://www.ebay.com/itm/Assembeled-Power-supply-board-for-KG-version-KSA5-headphone-amp-PSU-/322047929078?hash=item4afb8d6af6:g:-~UAAOSwoudW8MxP
so you could buy the right board, and the right power supply, put it in your own chassis with a transformer for about $300 total...