Yes. The old cable TV set-top box can be plugged into the stereo and used as a wifi speaker. It is very effective, very stable and can play music. Old cable TV set-top boxes have many uses. For example, the disassembled parts can be used as accessories. They are not limited to set-top boxes. The most important thing about set-top boxes is the internal chips, which can be removed and used in other electronic products to achieve recycling and reuse of resources.