Since I had worked my way prior to any purchase all customer reviews, I was to start up the outside very beautifully designed device it already prepared, nor having to use their powers of setting tweaking to achieve a reasonably balanced sound. But even if you together with bass setting controls the subwoofer to the smallest possible level, the voice amplification stages tried and then zaps through all existing acoustic presets: the sound remains inhomogeneous catastrophic! The built-in subwoofer produce an undefined low frequency Gewummere, which acts as a disturbance in the overall sound - I thought at first actually, the tenant of the flat above me would once again trample on the dance floor! For this is the "classic" Bass range to 100Hz (the flat-screen TVs just not usually yield) practically non-existent and not effectively readjusted. The sound is thin middle-heavy with indefinable Subbass. In fact, I wonder why the developers at Panasonic not only with this unit instead of the whole "3D Virtual Stadium Loudness Bass Boost" -Einstellungsdurcheinander (whose parameters, sometimes even influence each other) not finally proceed to a reasonable 5- incorporate band equalizer - and it would be good. The same preset circus I experience that is also for years with a portable Panasonic CD radio. On placement: The unit was placed under my Loewe televisions on a varnished (no resonating glass surfaces so!) Mobile rack, in front of a wall of books, which normally should have a lot of sub-basses (the Panasonic board radiates backwards) "swallow". I really expect a Speaker Board no high-end HiFi but what Panasonic makes here is the considerable price unreasonable. The device has gone back today; I will now try with the Canton DM-50 variant (and pray that I, none of the error-prone specimens -. see reviews - catch). The second star here there solely for the beautiful, unobtrusive design of the Panasonic boards.