Tube rectification for DAC SS analogue

[milen007]

hi guys

i am considering using 6X4 to power an analog SS dac out that has max 20mA current draw. toying with duncan psud, i need 40vac to get rectification of around 20vdc.

what are the tubes recommendation? would 6X4 be sufficient?

i am wondering if anyone has tried powering the dac output SS stage with tube rectification? whats the configuration?

thanks in advance
erwin

[milen007]

Anyone?

[DF96]

Maybe nobody has tried it. Why do you think that might be?

[kevinkr]

Originally Posted by milen007

hi guys

i am considering using 6X4 to power an analog SS dac out that has max 20mA current draw. toying with duncan psud, i need 40vac to get rectification of around 20vdc.

what are the tubes recommendation? would 6X4 be sufficient?

i am wondering if anyone has tried powering the dac output SS stage with tube rectification? whats the configuration?

thanks in advance
erwin

I've seen a couple around on the web, but unfortunately no recollection where.. I would think something like a hexfred would be a better choice, and should provide the soft turn off characteristic you get with tube rectifiers without the losses and high source impedance.

I would suspect that the dac is not operating on 20V and that there are a bunch of small linear regulators making the local voltages required - this would negate any sonic 'benefit' of the tube rectifier..

[milen007]

Thanks Kevin for the inputs

It would be lovely if ya can recall the keyword for Google search. But in the mean time I would just go with Salas reg before any working solution is found using tube rectifier

Thanks
Erwin