USBHI – Compact USB headset interface (ADC/DAC) from nihtila.com on Tindie
ASUS RoG Delta Type-C Quad-DAC Headset Review | eTeknix
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HiFi USB DAC Mini Digital to Analog Converter Coax/Opt Headphone Amp Treble Bass
iFi Launches new Go blu mobile Bluetooth DAC/Headphone amp - Headphone Guru
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D1 24-bit DAC/ Headphone Amp — Audioengine
Astell & Kern's new USB-C DAC promises hi-fi audio for phones without headphone jacks - The Verge