Ultrasound

Ultrasound was a brand of ghetto-blasters / radiorecorders sold in Germany during the early/mid 1980's. NOTE: Some people say the brand looks like Wawesound, but it's not, it's Ultrasound. You can clearly see that the first letter is a U.

Here are the models we know about:

Ultrasound JB-1000 (same as the Radiotone RRC-750)
Ultrasound JB-1500 (same as the iGu 4062)
Ultrasound RRST-980