Linear Power Supply for a DAC

Analog supply should be quiet, can be slower responding but input noise rejection is important. Paul Hynes supplies do the best job of this."

What power supply specification or other property could one use to tell if one supply is faster than another. I am also looking for a very good linear power supply for my Acoustic Plan Digimaster DAC which uses 4 - EC86 tubes and has a 15V ? 2A DC input.

Do power supplies have different "sound signatures" (if that's the right term). Acoustic Plan makes an optional linear power supply, the Powermaster, that will run two of their components but it costs $2000.   

Hi guys

if you remember i told you paul is not trusted and he not refund my money after 6 month.

now Paul have sent me an email and he told me he will refund my money this week.

Good news to me and other who would like to order Paul hynes PSU.

i should say Paul is trusted and if you pay him he will refund your money .

Amir