My dad had something like that too. We got to play a bit with it but mostly used to record conversations with old relatives or musicians in the family. I think

My dad had something like that too. We got to play a bit with it but mostly used to record conversations with old relatives or musicians in the family. I think it had 4 channels that you could switch between separately. We got normal tape recorders pretty early so it was more a fun thing for us to play with.