RATHER GOOD BUT THERE IS MUCH BETTER AT A PRICE EQUIVALENT

The Bluetooth (up to version 2.1 + EDR) for such a product has two major flaws:

1 / The quality of the link.
It has a range limited to 5 meters in the best case. Beyond that, we run the risk of untimely cuts or even total loss of the connection.
Furthermore, the connection is sensitive to many interferences: cordless phone, microwave oven, Wifi network router etc. Asking the receiver too close.
2 / The sound quality transmitted.
The bandwidth is too low to transfer music from MP3 or uncompressed at a high bitrate. It is therefore necessary for him to strongly compress the music that will be transferred and to do this it uses the standard codecs: SBC. The sound is coded on the transmitter and decoded at the receiver. This codec is very poor, well below the MP3. The result is poor: the bandwidth is more than reduced at both ends (bass and treble), the medium is cavernous, the dynamic is greatly reduced.
In summary, the use of a Bluetooth prior to version 3.0 (which multiplies by about 12 throughput compared to 2.1 + EDR) involves a significant deterioration of the sound source.
Given these elements, this type of device is recommended only to those who accept the risk of brownouts (at best) untimely and rather poor sound quality.
Alas, the Belkin Bluetooth HD is unfortunately not compatible aptX and Bluetooth 2.1 + EDR. It uses the SBC (source manufacturer). This is a big flaw.

Let us come to the qualities of this product.

We pass on the facility to connect in all cases, and even more if it has a NFC transmitter that activates the connection in seconds: this is not what sets this product from competitors.

This is its strength, it is the presence of digital outputs (one optical and one coaxial): by plugging the Belkin stereo receiver via a digital output, we will use the Digital / Analog Converter on your amp: it's your amp that will transform the digital signal into an analog signal and will do so without distorting the sound quality even more.

By cons, if the analog output is used, then this is the Belkin converter that will be used and there is catastrophic, the converter Belkin HD Audio does not hold water.

This product comes with an analog cable and a coaxial digital cable.

In summary, the Belkin HD Audio is superior to its competitors without optical output. The price difference is justified in view of the gain in quality.

There a few months, I would have given it 5 *. But I said, removes a result of the output of the Crystal Acoustics Blu-Dac-UK adapter Bluetooth Receiver with optical output and NFC. which is really superior to him for a few euros more (70 against 62 for the Belkin at the time of writing this review), it offers Bluetooth 3.0, supports aptX, has a digital audio converter well above (a Wolson WM8524 I think) and, best of all, benefits from the auto reconnect functionality is missing from Belkin.

I was torn between 3 * and 4 *. I initially noticed this time 3 * but the responsiveness of the service Belkin, which is very important with this type of product, led me to mount this note to 4 *.