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Old 15th January 2013, 03:37 PM   #1
diyAudio Member
Join Date: Oct 2005
Location: vienna
Default hybrid quad design

Hi there,

I was inspired of the Quad Design, so i tried to draw my tought on a hybrid amp. Here is the schematic:

Click the image to open in full size.

the first for tubes should be small signal pentodes like Ef86 or similar. The other two sould be Pentodes with high transconductance

the opamp is correcting the dc-offset via g2.

I am not shure, if this is a stable version, so comments and thought are welcome!
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