I have to admit, this unit sounds exceptional. The bass is very punchy, without the "boominess" that my Magnavox solid state consoles have. The horn tweeters have rather short horns, and produce less mid-range sound than some exponential horns I have heard.
The tuner (like most top-end Zenith's of that era) is fantastic! With the built-in antenna, it brings in the weaker FM stations that most radios leave out. Even the AM bank is quiet and sensitive. As odd as it sounds, the FM receiver is not stereo....the record changer and tape inputs are stereo. This was Zeniths best in 1961, and in 1962 the replacement chassis for mine had FM stereo. I suppose the engineering department figured there weren't enough FM stations broadcasting in stereo in 1961 to make it worthwhile to add that extra circuitry. Unlike the Magnavox sets of that era, no provision was made for adding a stereo multiplex decoder chassis to the Zenith. The owners manual just mentions the option of adding an FM stereo receiver through the tape input jacks.
Now, I've just got to get the record changer back in order. The motor was froze, but I took it apart and cleaned it up and she's working again. When I turn it on, the record drops, the tone arm starts to move over, and then it comes back to the rest and turns itself off. The record changer is a VM (Voice of Music) built machine, and I'm really not that impressed with it. As I told someone else, I am tempted to find a later model Zenith 2G record changer for this stereo. I would hate, however, to loose the cool "Cobra-Matic" tone arm