Mackie MDB-USB Stereo DAC Direct Box MDB-USB B&H Photo Video
Decoder Board Module | Voltage Regulators/stabilizers - 5v Mini Pcm2704 Usb Power - Aliexpress
Amazon.com: FiiO K3 Type-C USB DAC Headphone Amp : Electronics
Amazon.com: Fosi Audio Q4 Headphone Amplifier Mini Stereo DAC 24-Bit 192 KHz USB Optical Coaxial to RCA AUX Digital-to-Analog Audio Converter Adapter for Home Desktop Powered Active Speakers : Electronics