Philips MCM720 Shelf System "1250" Questions

...on the dual tape deck, and, what is the "OSD" button on the receiver for? This is an old Denon D-1250 shelf system. Thanks, OSD = On Screen Display Auto Reverse is a built-in feature of any tape ...

...MCM720 is one of the biggest CRAPS that Philips ever produced. if it is low volume, it produces 1250 Hz background noises that are real pain in the a... . If you go up with volume, amplifier goes ...