My purpose was my AV Receiver wirelessly connect with my Bluetooth headphones to listen to both TV, video and music. The only possibility was a Bluetooth transmitter. Since there is a strong delay in A2DP, I decided for this with APTX support. The delay here is barely audible and in my view almost in sync with the picture. The audio quality is fine. The lobby of the Bluetooth headset is not very good conditions (5m or a wall -> END). This adapter also works while being recharged via USB. so far so good. The weaknesses, however: while it is charged, there is a background hum that disappears only at elevated volume. That's annoying. However, you can do that prevent by simply not inviting him during transmission. The reason I had sent him finally back was that he always sets the transmission shortly completely if no or very faint audio signal (to probably to save power). This can be seen in very quiet passages, as discussions during a TV broadcast strongest. After each set a brief interruption, since even the normal noise from quiet is. Sounds like a stutter. Unfortunately, there are on the market (still) no alternatives with APTX, continuous current, and good audio quality. Therefore, even 3 stars.
