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My comrade Michael Rothacher just posted very amusing , informative and fun article on yootoobe :

http://www.youtube.com/watch?v=v1yHCcVW6eI&feature=youtu.be

 

His blog is in my Blogroll , while Diyaudio.com thread is : http://www.diyaudio.com/forums/pass-labs/244926-ironamp-video-posted.html