Originally Posted by
StanleyB
The stock SMPS power supply that I ship with my DACs and the Capella is quite good, and far lower in noise than equivalent SMPS power supplies that can be bought on eBay etc. I have covered that point numerous times.
But in some situations the noise from the mains can be horrific, and under those circumstances a SMPS can sound terrible. A good case in point is the neighbourhood where I live. During the day all the local factories are using their noisy equipment and that is feeding through into the local power lines. But in the evening it is far cleaner, and then the SMPS sounds just about the same as a linear PSU.