Amazon | YANHUA PCM2706 HI USB Soundcard DIY Kit USB DAC SPDIF Android Compatible MicroUSB Windows Without Driver Plug and Play | YANHUA | インターフェースカード 通販
DROK Portable HiFi PCM 2707 USB DAC Digital Digital to Analog Decoder Audio Converter Sound Decoder Board for Android Phone/PC/Tablet, Voice Announcement System DIY: Buy Online in Nicaragua at desertcart
PCM2902 USB DAC/ADC :: T5! DIY Audio Software & Hardware
USB audio DAC | Electronic schematics, Usb, Diy electronics
USB DAC 2 - Hi-Resolution System
USB DAC 2 - Hi-Resolution System
JEDAC - yet another take on a DIY high-end USB Audio DAC