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Read the Post in new Window Read the Post in Threaded view  Post #37: Tubes (etc.) vs Phono Curves by Paul S on 2009-10-09 
Browse the content of the threads in new Window  Thread: The K&K SE hybrid phono stage: a report in Analog Playback  55 Replies 
Rooting around for manufacturers' operating curve/info on 6922s I came across a short paper I got years ago from electronics genius Roger A. Modjeski.  In a nutshell, RM talked about internal variables in tubes that affect their electrical charac...

Read the Post in new Window Read the Post in Threaded view  Post #18: The more you know about tube testing, by Paul S on 2007-01-11 
Browse the content of the threads in new Window  Thread: Get, or made up a tube tester, it’s necessary in Audio For Dummies ™  44 Replies 
the less you know about...So, how do we go about screening tubes for audio, particularly audio signal tubes?  The only person I can think of who claims to have found a specific testing paramerer for this is Roger Modjeski, of Music Reference and...

Read the Post in new Window Read the Post in Threaded view  Post #38: IMO the Berning sounds like nice PP with some well done feedback by Paul S on 2007-10-02 
Browse the content of the threads in new Window  Thread: Devid Berning amplifiers: the anti-trnsformers frenzy? in Audio Discussions  45 Replies 
And I do not mean this as a criticism.I had for some time an "original" Music Reference RM9, which was made by another well-educated genius, Roger Modjeski.  The RM9 was AB PP with adjustable bias and feedback/gain, with 6DJ8 drivers and a ...

Read the Post in new Window Read the Post in Threaded view  Post #116: Some feedback on designing with the 45 and 2A3 DHTs... might prove int... by floobydust on 2009-01-19 
Browse the content of the threads in new Window  Thread: Single-stage Melquiades vs. DHT amps in Melquiades Amplifier  397 Replies 
 This thread has been pretty interesting overall. I've read most of it and would at least like to provide some feedback on the technical side of designing with the 45 and 2A3 DHTs... at least from my personal experience. A few years back I decid...
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