Papa bribed me with a pair of these , to leave Sea Ranch while he is still in good mood 🙂

 

Some interesting stuff , also Poor Men iteration of same :

 

 

Datasheet : 2SK77B , by courtesy of Diyaudio member – AnthonyA

Few itsy-bitsies in thread at Diyaudio

 

Working on two new SissySITs , first one is finished, soon to make happy my Webhamster Mikorist (short Miko).

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Last and final iteration of already known AVC based preamplifier , with JFet buffers and all bells and whistles

This one is balanced ( so no SE in name) , made for Robert from Poland

Plenty of pics , hopefully will add full set of schematics later

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It started not by plan , but by chance ….. several (or even more than several) months ago , I tried to help one of our Greedy Boyz at Diyaudio.com/Pass Labs subforum , to improve things with his Aleph X monoblocks.

Problem was simple but not so simple ……. in first incarnation , amp was sounding divine , but it was unreliable and eventually it gave up in flames ……. or at least with some gray smoke puffing out .

As usually ……. ZM at work :

 

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Iron Pumpkin(s) and other smaller vegetable animals

Well , it started long ago …. when I was really young(st)er, full with naivete and BS , came to pretty novel idea to make xformer loaded tube line stage …
Result of first tests , hardly optimal ( using two halves of 6SN7 in parallel and loaded with ancient xformer from vertical section amplifier of ancient B-W tube TV set) , I was blown with ‘till then unknown dimension of sound – everything was so alive ….
Later I made several iterations of line stage with same approach , being so proud for reinventing boiled water , until I got some xerox copies of Sound Practices , where I found that even in boiled water reinventing I wasn’t first ….. boyz from Italia already made Euridice preamp ; anyway , intermediate iteration was with two halves of 6DJ8 in parallel , latest one being with ubiquitous EC8010 and custom made xformer . That being even published on my old site – WOT preamp and battery charger 

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