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Compared with the obvious alternative of buying new, US$6,999 for this amp looks strong versus the recent used market: it sits well below the US$7,415 25th percentile and under the US$7,832 median from your comps. That puts it in bargain territory rather than merely “fair,” especially for a model that normally lives in the upper-tier used pool.
The appeal here is straightforward: this is a high-power, muscular ARC stereo amp with the brand’s usual grip, openness, and drive, and the GS150 has long been regarded as one of the more satisfying ways into big-iron tube amplification. At this price, it’s the kind of listing that rewards a buyer who wants serious performance without paying near-top-of-market money; I’d just want the usual essentials confirmed on any tube amp—service history, healthy bias, and clean operation.
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.
See all Audio Research listings on RADAR.
audio-markt.de
Good
eBay US
eBay US
Paragon Sight & Sound
Dealer
Hifitörget
SE
eBay UK
GB
