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In the Forum: Melquiades Amplifier
In the Thread: To drive the 6C33C...
Post Subject: OTL electrostat amplifierPosted by deemon on: 11/3/2010
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Yes , I told Romy about this funny idea , which is quite simple of course - to make a simple SRPP stage on special hi-voltage tubes , powered with high voltage supply ( 10000 V , for example ) and drive the electrostat panel directly from the output . The main thing here are the tubes , and I know only one Russian tube of this kind  - GP-5 , high-voltage regulator triode http://www.qrz.ru/reference/tubes2/type1/gp5.shtml , it has been used in old colour TV-sets , in the high-voltage regulator circuit for the picture tube . Of course , it must have many analogs in other countries ( and they can be even more suitable for audio amp ) , I don't know their names but I think that it's not a problem to find them . The main problem with this idea it that I haven't any electrostat speaker here to try , so it can be only a "theory" , of course ... And another point - we can use this ultra-high voltage amplifier only for big electrostats , like Quads , for example .... but for headphone electrostat we don't need such a voltage , so we can use the SRPP stage with more usual kind of tubes . 
Best regards 
Dima

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