Ampex A-122-SP "Caprice" Portable Stereophonic System
Three portable cases, an $850 price tag, and a secondhand market that never quite stopped moving.
Overview
An $850 stereophonic outfit in the late 1950s was not a casual purchase, and Ampex knew who it was selling to. The A-122-SP was also sold under the "Caprice" name, and period classifieds list it under both. It was a complete portable stereophonic system built around one argument, and Ampex's own advertising spelled it out: an audio system is like a chain, and there can be no compromise with weak-link components. The company's pitch was that every link in the A-122-SP, from the recording and playback heads through to the speaker, was forged to the same tolerances that guided its professional recording and playback equipment.
The buyer got a recorder and two speakers spread across three portable cases. The amplifier-speakers were Ampex-designed and Ampex-built as an integral part of the system, but they weren't captive. Each carried front-panel input switching for Tape, Tuner, TV, or Phono, so they could be pulled out and run with other components. That's more flexible than most packaged systems of the period offered, and it hints that Ampex expected owners to build outward from the A-122-SP rather than replace it wholesale.
The heads are where Ampex leaned hardest on its professional reputation. According to the company's literature, the facing surfaces of the head gaps were lapped to an optical flatness precise enough to reflect a single light band - half a micron - and given an initial surface polish of 6 to 8 micro-inches. The claim attached to that work was sustained frequency response with negligible change in characteristics over many thousands of hours of operation, described as many times longer than ordinary heads. That's manufacturer copy, not an independent measurement. Still, it's the kind of specification Ampex could actually hold itself to, given its professional tape line.
The amplifier section is rated at 0.25 V sensitivity for maximum power output, with output from 20 to 20,000 cps at ±½ dB and well under 1% harmonic distortion. Sub-1% was a serious claim for a packaged home system, and it fits the professional-equipment framing Ampex used throughout the A-122-SP's documentation. The speakers are described as featuring unusually high total gap energy, converting a maximum of output power into sound energy with smooth, peak-free response. That's advertising language, not a lab figure, and no independent test report for the A-122-SP appears in the period sources available here.
Pricing and resale tell a more complicated story than the spec sheet. The system listed at $850 new, and the classified columns of the period audio press - such as the shop-or-swap listings in Tape-Recording (June 1958, p.34) - show what happened next. One owner in Baltimore offered a six-month-old example at $600, described as like new with some tapes included. Another seller, also in New Jersey, listed a unit used less than three hours - spotless, not a single scratch, shipping in factory cartons - at $650 against the same $850 cost. A third ad in the same run describes the outfit as complete with recorder and both speakers in three portable cases, purchased in November, still in factory cartons, offered at $649.50. The numbers cluster tightly. The A-122-SP lost value fast in its first year and then flattened out, and sellers were consistently eating roughly two hundred dollars to get out from under it.
The reason given in those ads is almost always the same - a move up to Ampex professional equipment. Whether that means the A-122-SP disappointed its buyers, or just attracted people who were always going to trade up, can't be determined from classifieds alone. What the ads do establish is that lightly used examples were not hard to find, and that a buyer in the late 1950s had a reasonable chance of picking one up at a meaningful discount within months of its original purchase.
Collectors chasing one today should judge on condition and completeness rather than documentation. The surviving material for this model is thin and weighted toward period advertising and classified listings, not independent reviews or service literature. The three-case packaging and the separate-use capability of the amplifier-speakers mean partial examples are common. A full, matched set is the thing to hold out for. No production years, serial ranges, or service documentation for the A-122-SP specifically have been confirmed in the sources available here, so a buyer has to assess the system on its own merits, with no documented restoration path to measure it against.
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