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.
Friencity Digital To Analog Audio Converter, Optical To RCA Converter, SPDIF(Toslink) Coaxial To Stereo L/R AUX Adapter W/Optical Cable For TV Amps Blu-Ray Player PS4 Home Cinema, Plug N Play
6 Review
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
10-Pack Double-Sided Copper Clad Laminate PCB Circuit Boards - Perfect For DIY Prototyping!
8 Review
Streamline Your Prototyping Work With WayinTop Jumper Wire Kit - Preformed & Flexible Breadboard Jumper Wires With Tweezer Tool
7 Review