– no overal feedback

– active loaded triode as active element

– DC coupled all the way , servo controlled

– volume control as shunt element on output , so much less critical than usual series volume control


Brynhildr logo 😉  😉  – Courtesy of Mikorist – Baby Diyaudio Webhamster

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Yes , B17 , as Flying Fortress from WWII 😉


Working Project Title – Flying Furnace 😉

It started as happy mating of two jewels – original Weston Flying Fortress (B17 , WWII) Cylinder Head temp. gauge and cooling case of choke for induction furnace ( as seller of case told me ) .

Story , about salvaging that Weston instrument – when , where and how I found it , will take several pages of text , so better to leave it ………

So , it so steampunkish that I simply feel urge to do something with it ……

first – few pics from net , as confirmation of Gauge origin :






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



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