Yes, LPS is the "party line", reinforced by gazillions of computer audiophile anecdotal testimonials, all in totally uncontrolled subjective listening. Most of them read something like: "I replaced my SMPS with an LPS, and it blew my socks off". We are unclear on how much time elapsed between hearing each one while the new power supply was being installed and anything else about the comparison. But, any truly objective proof, measurably or otherwise and bias controlled, that LPS inherently sounds better than SMPS, particularly in audio digitally emanating from a computer or even the output from a DAC, seems to be totally lacking. Or, am I missing something?
Note that much Pro audio gear used in making recordings uses SMPS. Also, note that Soulution, the Swiss mega amp makers, recently "upgraded" their top monoblocks to SMPS from LPS. Also, note that Bruno Putseys' highly praised Class D amp designs use SMPS.
Footnote: for those unfamiliar with the acronyms, LPS = Linear Power Supply, essentially analog, SMPS = Switch Mode Power Supply, essentially digital.