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£80 is above the recent market for a Denon PMA-100M: the median asking price is £55, with the upper quartile at £70. That makes this clearly ambitious rather than a bargain, especially with condition listed as unknown; closer to £55–£65 would look more convincing unless it is exceptionally clean and fully tested.
There is still a good amplifier here. The PMA-100M is a capable Japanese-built integrated from around 2000, offering roughly 60 watts per channel into 8 ohms, sensible conventional inputs, tone controls, and the unusual microphone-mixing facility. It is respected for punchy, transparent sound and can drive ordinary speakers comfortably. At £80, insist on a proper demonstration: both channels, clean controls, quiet operation, speaker outputs, and the microphone section if relevant. A remote and excellent cosmetic condition could soften the premium, but otherwise negotiate.
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.
