RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
Dynakit 70 Stereo.I work on amps, and someone gave me this as payment for some work I did for them on another amp. I thought I'd use these trannies because they're fine, but the rest of this unit has been worked over pretty much. Certainly not in working condition.Long story short, I've never gotten around to using them, but maybe someone is restoring one of these and needs trannies. This whole unit is probably restorable if you have the enthusiasm for it, but I'm more focused on guitar maps at this stage. Chassis seems in okay condition, so that's a plus.
Against recent comparable listings, US$325 lands well below the US$530 25th percentile and far under the US$649 median, so this reads as a strong bargain rather than just a fair buy. For a classic Dynaco monoblock, that’s the kind of pricing that usually leaves room for restoration parts or a proper bench check and still keeps the total spend attractive.
The upside is the appeal of vintage Dynaco iron: these amps are prized for honest, musical sound, strong modification potential, and a deep enthusiast base for parts and service knowledge. At this price, the main thing to verify is basic completeness and whether the unit is electrically healthy enough to power up safely, since age-related servicing is common on gear like this. If it’s reasonably intact, this looks like a very appealing entry point.
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.
