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Audio Research VSI75se Integrated Amplifier (Valve) I'm offering for sale my Audio Research VSI75 integrated amplifier, originally purchased in late November 2018 and delivered in mid-December 2018. The amplifier is in mint condition, with only the remote showing signs of use, as seen in the attached photos. Details: Still using the original KT150 tubes, with approximately 500–600 hours of life remaining. Audio Research has confirmed KT150 will last at least 3000 hours tube life if lightly driven. Never driven past volume level 35 (maximum is 103). Comes with a copy of the original receipt as
At A$6,800, this Audio Research VSi75 is a genuine bargain compared to the typical used market, sitting well below the 25th percentile for this discontinued tubed integrated. When current, it retailed for roughly A$12,000–A$13,500 (based on $8,000–$9,000 USD), and the newer VSi75se now commands around A$25,500, making this listing a rare entry point into high-end tube sound at a fraction of the price.
The VSi75 is well-regarded for its 75 watts of single-ended purity, delivering compelling musicality with two matched KT120 (or KT150 in later runs) pairs and 6H30 drivers. Its clean mid-range, especially on human vocals, and solid construction make it a standout buy, particularly in like-new condition with original ownership history. With no missing accessories or known failure points flagged, this is a clear buying opportunity for enthusiasts seeking top-tier tube performance without the premium markup.
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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