Take his editorials and subjective comments for what they're worth, but it appears that he's got himself a very nice R&S analyzer.
1a. How can one identify the DAC chip inside a laptop, desktop, or a phone? Is there some software that can probe the chip to identify it?
1b. Is there an online database of computers and prones with their DAC chips?
2. Why are internal DACs so often maligned?
Is there any scientifically defensible reason for this attitude or is it just audiophoolery?
3. Where can one find data on measured performance of internal DACs? I mean, not just the manufacturers' data sheets, but actual measurements, that take into account the implementation.
I tried to do a simple loop back using ARTA software to measure my on board sound card. But in my experience you really need an attenuator in the loop to avoid clipping.
You can lower the volume if its clipping generally.