The Silent DC HiFi is a switching power supply, while the LPS-25 is a linear power supply.
In general, linear power supplies offer lower noise and cleaner power delivery, which is why we recommend a linear power supply like the LPS-25 for the best audio performance, especially in HiFi systems.
For a more detailed explanation of the differences between switching power supplies and linear power supplies, please refer to this post: https://community.lhy-audio.com/d/6-why-linear-power-supplies-lps-matter-in-hifi-systems
