This product is a marvel, he did everything we expected of him: RX mode, send music through a Bluetooth device to non-bluetooth components and TX mode, listen non bluetooth device with a Bluetooth headset. I hear a small voice when the volume is low but it must be because I have not the APX.
I recommend the eyes closed!
Warning !: If your Bluetooth headset is not detected by the device and vice versa, you must reset the product by pressing the on / off button for at least 12 seconds (he made several colors then stops). Relight just after and voila.