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-   -   J-fet - tube DAC analog stage (http://www.diyaudio.com/forums/tubes-valves/177073-j-fet-tube-dac-analog-stage.html)

regal 11th November 2010 11:14 AM

J-fet - tube DAC analog stage
 
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Been thinking of trying this for a TDA1541 which has that 25mV max compliance voltage spec meaning no big 20 ohm passive I/V resistors as so commonly practiced. The J-fet adds about -75db 2nd harmonic per spice, don't know if there is a better substitute. It is DC coupled to the tube gain stage.

Comments?


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