A well-designed power supply...is the basic prerequisite for good sound. With the FiiO PL50 linear power supply, you'll take a big step forward in terms of sound.
And what is good for sound quality are linear power supplies, with their greater, high -quality and stable voltage output, smaller ripple, and lower noise. The PL50, being a high-quality linear power supply brings to your sound a lower noise floor, more refined dynamics and transients, and a more accurate, warmer tone to lower frequencies.
Compared to switching power supplies, the noise of linear power supplies is mainly low and fixes in the frequency, which human ears are relatively insensitive to. In contrast, switching power supply noise is higher in frequency and can easily interfere with the analog portion of audio circuits due to radiation., directly impacting the output sound. Switching power supply noise can even indirectly affect the digital portion of audio circuits, further affecting sound quality. Since the low-frequency noise of the linear power supplies is fixed in frequency, this noise can be better and more accurately filtered out.
In addition, the large PL50 is also equipped with a filter circuit on the AC end, for filtering out interference generated by other electrical devices being used on the same AC circuit for even cleaner and more stable power.