John Warren Posted August 14, 2022 Author Share Posted August 14, 2022 On 1/6/2022 at 1:12 PM, mark1101 said: Nice. I like the amp but I really like the miniaturized preamp. I completed the preamp module some time ago, got involved in another project. Here's the module, based on a couple of 12AX7s. Requires a -45VDC supply for the tube heaters and a 250VDC supply for the anodes. Has treble and has contour pots located on the board. Caps are either NPO or film. The Fluke is showing anode voltage. Two channels on one board. Can be assembled in a morning. Sounds pretty good! 3 1 Quote Link to comment Share on other sites More sharing options...
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