Durio DualMono or Multi-DAC
Start smart: go with Durio Sound Pro. Add anytime later a Durio Sound basic to it, create a Dual DAC.
It will give you additional 3 dB SNR or half a bit better resolution. Even fancy: add as many basic versions, e.g. up to ten: every parallel DAC gives you additional 3 dB better quality.
It will work with all sound sources, any Raspberry Pi, SPDIF etc. Improve any time the quality of your audio by going Dual or even Multi-DAC.