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Dynaco Stereo 416 Power Amplifier w/ C-100 Energy Storage System – 200WPC Vintage MonsterCondition:Used – Very GoodPowers up and serviced before shippingNormal cosmetic wear consistent with ageNo major cracks or structural damagePickup Preferred in our Audio Department or shipping can be arranged158 W Clinton StDover, NJ 078017 days a week from 11AM - 6PMOur in-house Technician is available M-F during store hours._______________________________________________________________________________________Description:Dynaco Stereo 416 solid-state power amplifier paired with the highly sought-after C-100 Energy Storage System capacitor bank.This is one of Dynaco’s legendary “super amps” from the late 1970s, delivering massive clean power with excellent headroom and bass authority. The C-100 adds an additional 100,000µF of capacitance, improving transient response and low-end performance.If you know vintage hi-fi, you know this is a serious piece of gear—built like a tank and capable of driving demanding speakers with ease.Key Features:200 watts per channel into 8Ω ()Up to 300W per channel into 4Ω ()Frequency response: 20Hz–20kHz ()THD: approx. 0.25% ()16 output transistors (8 per channel) ()Rack-mountable industrial designMade in USA Dimensions & Weight (approx.):Amplifier: ~19" W x 7" H x 13" DWeight: ~45–55 lbs (amp alone)C-100 capacitor bank: additional ~20–30 lbsTotal shipping weight: ~70–85 lbs
This is an older, discontinued design, so timing matters mainly in the sense that you’re buying vintage muscle rather than something with current support. At US$1,450, it sits well above the typical used market here: the median is US$395 and even the 75th percentile is only US$750, so this is clearly an ambitious ask rather than a fair-market bargain.
That said, the appeal is real if you want a big, high-current classic with serious headroom and the matching energy-storage unit adds to the draw. These Dynacos can be very satisfying when healthy, especially for buyers who value heft, old-school build, and collectible factor. I’d want proof of proper operation, any service history, and confirmation that the extra unit is complete and functional, because at this price the package needs to be excellent to make sense.
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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