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Great amplifier in solid condition. Let me know if you have any questions. Thanks for looking!
At US$1,500, this Audio Research D240 listing is ambitious compared to the typical used market, where the D240 MKII usually trades between US$1,100 and US$1,400. The Reverb listing for a serviced MKII at US$1,099 confirms the lower end of that range, while European listings cluster around US$970–US$1,410, making US$1,500 sit above the 75th percentile for unverified condition.
The D240 remains a cult favorite for its muscular, clean power and smooth midrange, delivering 240W per channel with the classic AR reliability and tonal balance enthusiasts still chase. If this unit is original-owner, fully serviced, and includes the power cord and manuals, the extra cost buys provenance and peace of mind; otherwise, it’s a fair but not urgent ask for a well-loved amp that still punches above its price class today.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Audio Research Corporation, founded in 1970 in Minneapolis, Minnesota, by William Z. Johnson, traces its roots to his pioneering work in custom audio electronics during the 1950s and his operation of a specialty retail store through the mid-1960s. After a brief stint selling his designs to a larger firm, Johnson regained independence to establish ARC with a singular mission: advancing the state-of-the-art in music reproduction. From modest beginnings in the back of his shop, the company evolved into one of America's oldest continuously operating high-end audio manufacturers, now housed in a state-of-the-art 48,000-square-foot facility in Maple Grove, Minnesota.
ARC specializes in performance-driven electronics, renowned for vacuum-tube amplifiers, preamplifiers, and electronic crossovers that emphasize sonic purity over flashy features or aesthetics. Drawing on circuit designs rooted in the 1950s, the brand integrates tubes into modern contexts, delivering what it calls "high definition" sound through genuine technological advances. While not venturing into speakers, turntables, DACs, headphones, or cables, ARC's focused lineup prioritizes amplifiers and preamps that set benchmarks for musical realism.
Positioned at the pinnacle of high-end audio, Audio Research is hailed as a true originator of the genre, commanding respect among audiophiles for its unwavering commitment to excellence and innovation. Enduring the 1970s tube revival against solid-state dominance, ARC thrives via elite specialist retailers worldwide, standing alongside peers like Conrad-Johnson as a vintage-inspired yet forward-thinking force in the niche boutique market.
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