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Dynaco PAT-5 Solid State Preamp, Refurbished, with Rare Wood Case & Orig. Manual This unit has the rare wood case and the original manual. The amp has been refurbed by a former Dynaco service guy. Many caps replaced. Works great!The unit is heavy.About me. I have over 62 years of experience in many facets of electronics design and repair. I have been working with tubes since I was 12 years old. I am an active ham radio operator and have been for 62 years. I’m a retired electrical engineer with 30 years in the Semiconductor industry. I’ve been collecting, buying, and selling tubes and other tube based equipment since the 1980s, and have been a Reverb seller since 2020. The pictures you see are of the actual tube(s) you’ll receive.
At US$450, this lands a bit above the recent used median of US$395 and just over the US$423 upper quartile, so it reads as mildly ambitious rather than a bargain. It is not wildly out of line, but buyers should expect either very strong condition or meaningful extras to justify the premium.
The PAT-5 has real appeal for enthusiasts who want a classic, musical preamp with a loyal following and lots of upgrade potential. Its value is strongest when the unit is clean, original, and properly serviced, since age-related issues can matter more than cosmetic condition on vintage gear. If this one is truly healthy and complete, it can still be a worthwhile buy, but at this price the seller needs to show why it deserves top-of-market money.
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.
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