Does a DAC need a large/strong power supply?

"but people say they're not that good because of a weak power supply"

When people say this, how many of them do you think have professionally designed electronics for audio or other similar low noise electronics?

When people say this, can they clearly and concisely describe, in point form, exactly what is wrong with the power supplies on these units?

I would be more worried about isolation on the interfaces.

@koestner 

"Does a DAC sound better with an overkill power supply?"

On the surface, you seem to be asking an honest question, but your ASR bias is made obvious by the use of the word "overkill".

If you already see a beefy power supply as "overkill" then why ask the question at all?

A good DAC doesn't sound like anything no matter the power supply.

Good detective work there, Tony. 👍

"Does a DAC sound better with an overkill power supply?"

Yes.

My first "serious" DAC was an Audio Alchemy DDP-1. I tried this with & without the optional stand alone power supply. The difference was easy to hear. With the optional power supply the bass was more pronounced & the highs were cleaner. Also... what dow jones states above is right, just haven't run across one of those yet.