Cheap chinese parts that are good for prototyping simple circuits, but not for production or permanent use. They have no datasheets or specs, and likely wouldn't meet them even if they had them. You know what you are getting when you pay this little for a huge set of parts. Don't expect miracles, and buy good parts from a reputable dealer if you are building or repairing something that you care about.
Topping D30 High-Resolution Audio Decoder With DSD Support, USB, Coaxial, And Optical Inputs, Xmos Technology, And CS4398 DAC Chip For 24Bit/192Khz Playback
10 Review
Douk Audio U2 PRO XMOS XU208 Digital Interface - USB To TOSLINK/Coaxial/Optical/HDMI IIS Adapter For DAC, Preamp & Amplifier | PCM & DSD256 Support
21 Review
4PCS Breadboards Kit Include 2PCS 830 Point 2PCS 400 Point Solderless Breadboards For Proto Shield Distribution Connecting Blocks
14 Review
10 Pcs Copper Clad Laminate PCBs - 7X10 Cm 4X2.7 In - Universal Circuit Board For DIY Etching Projects
6 Review