This week, we covered the AM Stereo novelty that swept through the radio industry for a bit way back when. Sony provided consumers with plenty of AM stereo capable receivers, including this little Radio Walkman, the SRF-A1. It offered FM stereo and AM stereo. The two-position switch on the front is to accomodate reception of several popular flavors of AM stereo: Harris, Magnavox, Motorola Systems on the top setting, and the Kahn-Hazeltine System on the bottom. This model is indeed a rarity, and is sought after walkman and AM stereo enthusiasts alike.