AEA2000 / 12 (single Bluetooth optional):
Connections to the Hi-Fi device is via RCA or 3.5 MM.
That is to say that it is this product that converts the digital signal into analog and you can imagine that the product price, the converter can be only very low-end and therefore its not good.
Moreover, without apt-X, we pass by the default codec Bluetooth, disreputable SBC. At 25 euros (3.5 *), yes because the buyer will have to pay for, to 35 euros (2.5 *)
AEA2500 / 12 (+ Bluetooth NFC):
Connections to the Hi-Fi device is via RCA or 3.5mm.
That is to say that it is this product that converts the digital signal into analog and you can imagine at the price of the product, the converter may be very low end and therefore its not good.
It therefore lacks the essential thing: a digital output that would have to connect it to the digital input of an amp that would have made him the conversion with a quality beyond compare.
For this type of device, the digital output is ESSENTIAL. The apt-X codec (present here), a more important if your smartphone or tablet is equipped with the CODEC.
In short, the more expensive it will bring nothing more to the sound level from the previous because of its analog outputs and internal converter. It is not enough that the sound happens in digital is very good, it is still necessary to convert analogue keeping his quality that Philips converter does not allow.
2 *
One can find, among other brands, much better than AEA2000 and 2500 for lighter fare.
AEA 2700/12 (NFC + Bluetooth + Multipair).
2 digital outputs (coaxial and optical), a 3.5 mm Jack connector output, apt-X codec and AAC, a reasonable price, it would have if it all worked well.
But then, it does not work well but perfectly. I would award him gladly 6 * as it seems to be a top choice among ALL Bluetooth receivers.
For those who want to invest more, they will seek the Crystal Acoustics Blu-DAC which itself is versatile as an analog output or digital output is used (5 * What Hi * Fi equipped with a very useful when Wolfson DAC the amplifier has no digital input), available on Amazon.com but not on amazon.co.uk and elsewhere.
That said, next price / quality, I opt for the Philips AEA2500 / 12 and recommend it as a great device. Even if you do not have apt-X transmitter, think you can one day have a ;-)