Newbie questions about test drive

Hello, I just did a test drive with the new 6 and was actually quite guessed only one really bothered me. The BOSE sound system had in my opinion always some dropouts. Once the sound is really good and then it is again as if some loudspeakers were switched off. Sometimes nothing comes from the front then it is like when the bass was switched off or from the back you have heard nothing. I now suffer from hearing crash or why was that So, or was the system just broken? I’m not the 100% pleasure listener now, but that’s how I would get angry all the time. I only compare the normal speakers in my A4 Limo 2004, which have as much as I know 160W but it’s the standard radio with CD. Otherwise I liked the 6s quite well there are some small things that I’m used to from my Audi which the Mazda didn’t have but I didn’t notice anything serious about that so far. ahlt ? Equipment should be: Center-Line 2.0 121 KW Touring package, technology package, metallic and TomTom As house price with cash payment my dealer wants to have 28941,- ( postcode 24xxx ). Greeting, Michael.