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A PMA-665R at A$400 is fair to a touch ambitious unless it’s exceptionally clean, serviced, and complete. I can’t benchmark this exact model tightly from the available data, but similar older Denon integrated/receiver listings in Australia tend to clear well below that level, so A$400 only makes sense if this one is genuinely tidy and ready to plug in.
What makes it worth a look is Denon’s usual formula: solid, no-nonsense build, useful phono-era flexibility, and a reputation for easy listening rather than fuss. If it’s an original-owner unit with the remote, manual, and no scratchy controls or relay issues, that adds real value; if not, I’d want the price lower because age-related service items can matter on this vintage.
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.
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