Expired
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SpecificationsPower output: 50 watts per channel into 8Ω (stereo)Frequency response: 5Hz to 100kHzTotal harmonic distortion: 0.05%Input sensitivity: 2.5mV (MM), 150mV (line)Signal to noise ratio: 76dB (MM), 100dB (line)Output: 150mV (line), 1V (Pre out)Speaker load impedance: 4Ω (minimum)Dimensions: 430 x 146 x 321mmWeight: 13kgYear: 1978
US$599 is fair, essentially right on the middle of the recent comp set: it matches the US$599 median and sits just above the US$559 25th percentile while remaining below the US$618 75th percentile. For a Denon PMA-501, that means this is priced like a normal market listing rather than a bargain, but it is not ambitious.
What makes it appealing is the Denon’s reputation as a solid, straightforward integrated amp: clean power delivery, easy day-to-day usability, and the kind of no-drama vintage build many people want for a simple stereo setup. If the unit is original, quiet, and fully functional, there’s real upside in buying a well-kept example at a fair price; just confirm basic health items typical for an older amp, like scratchy controls, relay behavior, and clean channel balance.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Denon traces its origins to 1910, when American entrepreneur Frederick Whitney Horn founded Japan's first audio equipment company, Nipponophone, initially focused on gramophones and records. The Denon brand emerged in 1939 from the merger of Japan Denki Onkyo—combining "den" for electricity and "on" for sound—with other entities, marking a shift toward professional audio development. This heritage includes pioneering Japan's first professional disc recorder in 1945, used to capture Emperor Hirohito's voice, and launching the nation's first long-playing records in 1951.
The brand excels across a broad spectrum of hi-fi categories, from amplifiers, turntables, and tuners to loudspeakers, cassette decks, and phono cartridges. Denon's innovations extend to digital frontiers, such as the world's first practical PCM recorder in the early 1970s, the inaugural CD player in 1981, and early home theater systems with Dolby Digital in 1995. Today, its lineup encompasses AV receivers, headphones, wireless streaming solutions like HEOS, and high-channel processors, blending professional-grade components with consumer accessibility.
Denon holds a commanding position as a mid-to-high-end mainstay in the hi-fi market, revered for its blend of technological firsts, robust build quality, and balanced sound signatures that appeal to discerning enthusiasts. No longer a vintage collector's niche, it competes confidently against premium rivals, backed by over a century of audio leadership and strategic partnerships like its merger with Marantz.
See all Denon listings on RADAR.
