interesting -- looks like a homage to the original sqr-46 bremen
https://www.radiomuseum.org/r/blaupunkt_bremen_sqr_46_7646898010.html
were these stock/available on 911s of the vintage?
Also, as tor west's comments, I agree that lossy compression can significantly degrade sound quality and have transferred all of my cds to the lossless flac format. Looks like the new bremen may only support mp3 or wma files -- not flac or apple lossless. hopefully it will support lossless wma - also excited that it has preamp (line) outputs