Synology DS115j ... is it OK?

[simoncn]

Welcome to the MinimServer forum!

The DS115j has a very low-powered CPU (800 MHz). It should be OK for browsing and playing files but could struggle with some transcoding combinations. This is probably why you are having issues with transcoding .dsf and .dff files to wav24;176. You can confirm this by looking at Resource Monitor while transcoding is happening. If the CPU level is at or near 100%, you need a faster NAS.

Some people find that flac:wav24 transcoding produces better sound. The best way find out if it is better in your setup is to try it and listen. This could possibly also be the case with aiff:wav but it is much less common for people to use this transcoding combination. The best approach for all combinations is to try it and decide based on what you are hearing.