Thanks for the warm welcome!
Feature wise I feel I just need the power amp and one XLR input
But I keep reading a pre-amp make sense after a DAC even if it has volume control so I'm puzzled. I do not need 4 inputs nor a display, and as far as volume attenuation is done by the DAC I 'should' be fine, in theory. The D70 Pro output should be enough to feed a power amp, as far s I can tell. I'm missing something?
The DAC effectively acts as a preamp due to its volume control. Electrically it's the exact same as a preamp.
To make sure a source (DAC, preamp, whatever) and poweramp combination works, you need two figures:
1) Source maximum output level. The D70 pro does 4.2V on balanced out, nicely adhering to the 4V standard - not all gear does. Even has a selectable 5V mode, but you won't need that. Because:
2) Those Audiophonics 252 poweramps have an input sensitivity (input voltage required for full power output) of 2x0.83V = 1.66V. That's lower and means a 4V source can easily drive it to full power, and then some.
The rather big difference is actually a good thing, because some software sources can refuse to output full volume,
for example YouTube. The "too high" volume of the DAC relative to the poweramp input suddenly becomes handy.
If they were both exactly matching, for full volume you'd actually need a preamp that, well, amplifies. But here, it works fine for all occasions. All you need to do is watch DAC volume. You do not want it to shove 4V to the poweramp by accident, it'll blow your speakers.
