I've just never believed himself. But it is so: the whole expensive DAC's, noble network player, etc., for which you need the really? Open packaging, the WTX500 plugged back to the amplifier, power supply unit into the socket. My APTX enabled smartphone has immediately connected. Now I can a) music b) c) music from the SD card of my smartphone and d) music via internet radio stream from my NAS (eg via DS audio), music on Wimp or Qobuz, directly to the amplifier. My smartphone has already taken up the legacy of the iPod Classic (big SD card), Internet radio made the tuner superfluous sent my NAS my CD's in the basement, the streaming options give the CD's the rest. And this APTX Bluetooth Receiver does it all. You do not even see him behind the amplifier (LED is pasted over). Range is not a problem. The sound is impeccable, it roars nix. Maybe like a high-end DAC / network players dissolve higher, but this solution is minimalistic and works flawlessly.