I have a Topping P50 linear PSU powering my Pi, a Topping D50s DAC and a Musical Fidelity phono stage. It can power 2x5V and 1x15V simultaneously.
I'll say that there's no difference on the digital side of things compared to using switch-mode PSUs, if your DAC is a HAT board getting its power from the Pi's GPIO then there may be some benefit to feeding cleaner power to the Pi if the DAC is particularly vulnerable to noise. A well designed external DAC is unlikely to benefit from quieter power. All depends on the mains power in your home to start with and the design of the DAC.
The noticeable benefit for me has been with my phono stage but there's no audible difference with the digital stuff, the main advantage is there's less plugs in the power conditioner. YMMV.
Hope that helps
I'll say that there's no difference on the digital side of things compared to using switch-mode PSUs, if your DAC is a HAT board getting its power from the Pi's GPIO then there may be some benefit to feeding cleaner power to the Pi if the DAC is particularly vulnerable to noise. A well designed external DAC is unlikely to benefit from quieter power. All depends on the mains power in your home to start with and the design of the DAC.
The noticeable benefit for me has been with my phono stage but there's no audible difference with the digital stuff, the main advantage is there's less plugs in the power conditioner. YMMV.
Hope that helps
