This might improve your SNR ( signal noise ratio ) if you use any DSP ( digital signal processing, meaning resampling, equalizer, crossfeed, surround, compressor etc ). Neutron internally calculates with 64 bit or 32 bit. It often happens that whatever gets its output, which in most cases is the DAC ( digital analag converter ), cannot handle that many bits, so some have to be truncated. To mitigate the adverse effects of this truncation Dither can help.
See Audio Dithering: What You Need to Know
and DitherSo, what is dither? It’s a form of low-level noise that is intentionally added to a digital audio file as it’s rendered to a lower bit depth.
As a further option in this context you can enable or disable Noise Shaping . This doesn't apply just any noise, but such a noise that the resulting noise is shifted in the frequency spectrum to areas where humans hear it least.This leads to the dither solution. Rather than predictably rounding up or down in a repeating pattern, it is possible to round up or down in a random pattern.
And finally: when do we need that ? If Neutron's output has at least 24 bit then humans won't hear the noise and the DAC won't be able to reproduce better than that anyway due to Johnson–Nyquist noise . Also if the music is loud ( pop, rock, etc ) noise doesn't matter. But the cost isn't high and so for the sake of simplicity I suggest you just keep it permanently switched on. Have a look at this topic, there a user tells us that he has music that he prefers to hear without Dither.