Harmon Kardon 230A Receiver (~1970)

The younger brother to the famous and abundant HK 330 series (330A, 330B, and 330C), the 230A shares many of the design cues that made that line so popular.   Nice styling touches include a red, lit, power button, sold aluminum machined knobs, and that distinctive black-out dial face that lights in a beautful green glow when AM or FM is selected.  An unusual feature on the 230A is a split AM and FM dial.