Grundig RR 750 Professional – Vintage Stereo Radio Recorder Original Grundig RR 750 Professional portable radio recorder, a classic and solidly built model from the late analog era. Radio function: The radio works correctly. FM reception is clear, stereo indicator lights up, and tuning is stable across the bands. Cassette deck: The cassette player is NOT working. Most likely the drive belt needs replacement, which is common for devices of this age. No further testing has been done. Condition: Overall good vintage cosmetic condition with normal signs of age and use One control knob is missing Antenna is slightly damaged, but still present All markings, scale, and labels are intact and legible Battery compartment is clean