Ampex 352-2/4U (c. 1961)
Little is documented about the Ampex 352-2/4U. What survives is one 1961 equipment-directory listing. HI-Fi-Stereo-Buyers (1961, p.91) showed the 352-2/4U as a professional two-and-four-track tape recorder, sold unmounted, at $1,640.00. That made it the most expensive of the three 352-series decks in the same entry. The half/full-track 352-U was $1,195.00 and the two-track 352-2U was $1,481.00.
The listing groups these machines with the Series 354 professional recorders. It describes the series as using three heads with a choice of two speeds - 7½/15 ips or 3¾/7½ ips - with two-track stereo and monophonic erase, record, and playback. The page doesn't spell out whether every detail in that line applies to the 352-2/4U specifically. It's still the closest thing to a specification sheet the surviving record offers.
Beyond that entry, the record is empty: no production years, no circuit details, no manual scans, no owner-community notes. If you own a 352-2/4U or have paperwork for one, the Archive would like to hear from you.
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