Archimago's Musings: MEASUREMENTS: "CheapDAC'22" - Cheapest DAC in 2022? US$3.57 S/PDIF DAC from AliExpress. (Does objective analysis correlate with sound quality? Of course! And Lavorgna's DUT comment - "HiFi" is not art.)
Introduction to DACs: Headphones Enthusiast's Guide | Part 2 - Headphonesty
Best Home Audio DACs For Audiophiles On A Budget! (2022) - HIFI Trends
How to Choose a DAC | The Master Switch
dddac info page - Audio Creative Shop
New 32bit D/A Converter IC for Hi-Fi Audio Equipment | ROHM Semiconductor - ROHM Co., Ltd.
PecanPi+ DAC
Streaming for audiophiles… better sound on a modest budget – audioFi.net
The best DACs for 2023 | Popular Science
The 3 Best Portable Headphone Amps With Built-In DAC of 2023 | Reviews by Wirecutter