New or Old DAC

Almarg- what are you trying to tell me- that no DAC in existence can utilize Vacuum Tubes in its Rectifying Stage as a Power Supply to its Digital Circuits? And you agree with Jmcgrogan2 in this regard?

No, I did not say that, and you are quite correct that audio components of all kinds can and often do utilize tube-based rectifier stages/power supplies, which in some components may supply power to digital as well as analog circuits.

JMCGrogan2: Remember, no one puts tubes, fancy caps or resistors in the digital to analog convertor, these premium parts go in the analog output stage.

Pettyofficer: Sorry to disagree, my Space Tech Lab DA-64XT DAC utilizes an STR-104 Tube Rectifier. This Rectifier does have two very, very large Tubes that supply power to all of the components within the DAC.

Again, I think there is a misunderstanding here. You (PO) were referring to the DAC component in the sense of the entire component, while John was referring (I believe) to "digital to analog converter" in the sense of the dac circuit or chip within the overall component (as distinguished from the power supply within the overall component). Notice his reference to the analog output buffer stage (as distinguished from the d/a converter stage), which would seem to confirm this interpretation.

Then if the Rectifying Stage Circuit IS the Power Supply, and it utilizes Tubes, then Jmcgrogan2's claim that no-one uses Tubes-fancy Caps-or Resistors in the Power Supply for Digital Stages is completely bogus.

If that is what John meant, then yes, he was clearly wrong. But I suggest that you consider the possibility that, as I indicated immediately above, he was using the phrase "digital to analog converter" in a different sense than you interpreted it.

Regards,
-- Al

Almarg-
I am going to try this one more time. It doesn't matter if one is refering to the DAC as the entire component or strictly the the "digital to analog converter" dac circuit or chip! There is no distinguishing the power supply within the overall component. Everything that is the Component, as well as what is part of the component, is fed Direct Current via the Rectifying Stage. The ONLY thing that gets fed anything else, Alternating Current, is the Rectifying Stage itself. The ONLY difference to the power supply of each part of the Component is the Voltage, and Capacitance of the DIRECT CURRENT via the Rectifying Stage! The DAC Circuit is supplied DC from the same source, the Analog Output Stage is supplied DC from the same source, that source being the Rectifying Stage. There is no distinction, other than Voltage and Capacitance, between the power to the Analog Output Buffer Stage and the D/A Converter Stage. Other than Voltage and Capacitance, Direct Current is Direct Current no matter what it supplies. Why do you and Jmcgrogan2 insist that there is a distinction between Two Direct Current Power Supplies that come from the same source? Do you not concider the Direct Current Output of the Rectifying Stage as being part of the Power Supply that we are refering to? Other than Voltage and Capacitance, what is the specification of the distinction between two Direct Current Power Supplies that you are refering to? Wave Amplitude and Cycles Per Second? Two Direct Current Power Supplies, one to the Analog Stage, one to the D/A Converter Stage, what is the distinction other than Voltage and Capacitance? Need I remind anyone that these two DC Power Supplies come from the same source?
This is basically the same logic and reason, as concidering the Lungs as not being part of the Human Circulatory System. If you eliminate the Lungs from the Equation, just what is the Circulatory System circulating?
Sorry to notice the gap in your logic and reason being as wide as the Grand Canyon. The best that I can do is offer you a shovel.

Why do you and Jmcgrogan2 insist that there is a distinction between Two Direct Current Power Supplies that come from the same source?

We don't (or at least I don't, and I don't think John does either). I suggest that you re-read my previous posts.

Need I remind anyone that these two DC Power Supplies come from the same source?

No, you needn't remind anyone. My point is that I don't think anyone has said anything to the contrary.

Regards,
-- Al

Pettyofficer: Sorry to disagree, my Space Tech Lab DA-64XT
DAC utilizes an STR-104 Tube Rectifier. This
Rectifier does have two very, very large Tubes
that supply power to all of the components
within the DAC.

Nice try Almarg, components within the DAC refers to the D/A Converter Chip Set amongst other Circuits, not the entire Component. Notice the use of the "Plural" version of component, meaning more than one. Notice the use of the word "within" meaning inside. Perhaps I am really going too fast for everyone, or is everyone trying to pull a fast one over me! You are going to have to try a little harder than that!

I was a pettyofficer in the US Navy years ago and after hours spent a great deal of time drinking heavily as well.

Glad to see the tradition continues.