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Came from estate sale. Tested at home, works. I have WAV file of tuner feed if you would like to see and hear that. Some scatches on outer case. Faceplate in good condition all knobs are there. Paper tag on back says PAS with no additional digit.
This is a buyer’s market for this category at this price. At US$290, it lands well below the US$445 median and under the US$220–US$889 interquartile band’s upper half, so it reads as a solid value rather than an ambitious ask.
The PAS is a classic for a reason: a simple, musical tube preamp with a huge following, easy serviceability, and plenty of room for thoughtful restoration or tube rolling. If the unit is complete and working cleanly, the upside is strong for anyone who wants vintage charm without paying top-of-market money. On a piece this age, the real check is condition and service history, but at US$290 the pricing leaves enough room to absorb normal age-related maintenance and still feel like a good buy.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Dynaco emerged in 1955 from Philadelphia, Pennsylvania, when hi-fi pioneer David Hafler partnered with engineer Ed Laurent to form the Dyna Company. Hafler brought expertise from his earlier Acrosound venture, which produced high-quality output transformers starting in 1950. The duo targeted the burgeoning hi-fi market with affordable, DIY-friendly kits, launching the Mk II 50-watt tube amplifier shortly after incorporation and relocating to a former chocolate factory for expanded operations.
The brand specialized in tube amplifiers that defined its legacy, including the iconic Stereo 70—over 350,000 units sold—alongside models like the Mk III. Dynaco expanded into FM tuners such as the FM-1, bookshelf speakers like the A-25, solid-state amps, and innovative systems like the Dynaquad for simulated four-channel sound. Late-1970s efforts included the Phase III speakers, though the company shifted toward kits and components emphasizing value and performance.
Dynaco holds a revered position as the era's top-selling tube amp maker, beloved by budget-conscious audiophiles for reliable, high-value hi-fi. Liquidated in 1980 after Hafler's sale to a toy firm, its vintage gear remains a collector's staple, with later revivals by Panor Corporation producing replicas for tube enthusiasts seeking that classic warmth and build-it-yourself appeal.
See all Dynaco listings on RADAR.
