Delivery was smooth. Product was packed protected. Sichtprrüfung the electronic components (capacitors, transistors, coil, soldering etc.) absolutely fine. Product then built into the subwoofer enclosure, connected and tested. Active subwoofer module works. The power that is given is really good. If you want to annoy the neighbors, just the controller times to the center position :-) Have the module in a 30 subwoofer installed (with housing) (DIY) as my 5.1 system the active subwoofer went flutes by the devil. On Auto Power Off function. In "Idle" no noise noticeable. Because the value for money also true there are 5 star and from me a buy recommendation.
