This is 100% working and tested. Allows you to stream directly into your dsp via Bluetooth high res audio and even tuning via app. Really cool piece and they don’t make them anymore. I have this one listed price competitively better than any other on market. First come first serve. You can buy with confidence as we are a seller with 100% feedback and we strive to make pleasant transactions with all of our fellow eBayers. We ship fast and free.