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11th November 2010, 11:14 AM
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diyAudio Member
Join Date: Jan 2004
Location: MD
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J-fet - tube DAC analog stage
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.
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