I have a Denafrips Pontus II and recently bought a Denafrips Ares 12th-1. If you want an organic, analog-type presentation, I would recommend an R2R DAC like the Denafrips DACs mentioned. Denafrips offers firmware updates, but I haven’t tried them, because they sound excellent as-is. For streaming, I use a Raspberry Pi 4 running Volumio 3 that allows me to play my ripped CDs off a hard drive and stream high resolution music from Tidal.
I’ve dabbled with the ESS sigma-delta DACs. To my ears, there is no comparison—R2R DACs give my Technics SL-1200GR a good run for the money.
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