My problem with tube DAC's is there is always a big compromise, either its just a cathode follower after an opamp or its a gain stage after a too large I/V resistor which causes non-linearities with the DAC chip.
Has anyone ever tried a phono preamp (minus the RIAA eq) as an analog stage for a current output DAC like the PCM1704? It has been shown elsewhere that the PCM1704 performs best with an I/V resistor smaller than 10ohms which requires a lot of gain. The first phonostage would basically be working like a step-up transformer in the old audionote patent. My concern is if the phono stage would be quiet enough to handle a mV p-p signal ?
Has anyone ever tried a phono preamp (minus the RIAA eq) as an analog stage for a current output DAC like the PCM1704? It has been shown elsewhere that the PCM1704 performs best with an I/V resistor smaller than 10ohms which requires a lot of gain. The first phonostage would basically be working like a step-up transformer in the old audionote patent. My concern is if the phono stage would be quiet enough to handle a mV p-p signal ?
Hi Allen
The Tetra Phono Pre is from John Broskie Tetra Phono All-in-One & Broskie Impedance Multiplier
Regards
Franz
The Tetra Phono Pre is from John Broskie Tetra Phono All-in-One & Broskie Impedance Multiplier
Regards
Franz
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