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Audio Research SP8 Pre Amplifier For sale I have an Audio Research SP8 tube pre amp in excellent condition , retubed 2 years ago , all rca's replaced with gold ones , Herbies tube damper rings , one faulty 630 v capacitor also replaced . Comes with the ultra rare factory original wooden case .Stainless allen head screws on faceplate handles . Pick up or can meet within reasonable distance . Have original packing but won't fit with the cabinet on . Condition: Excellent Payment Method: Eft , cash on pick up Region/State: (NSW) New South Wales/Australia By Chris Launder 0 Comments AUD $2,650 Da
This is a fair ask, slightly on the keen side, not a bargain-basement deal. Comparable used SP-8s cluster around roughly A$2,000–A$2,700, with recent examples often landing near the middle of that band, so A$2,650 sits close to the top end but still within normal market territory for an excellent specimen.
That makes sense for a classic Audio Research tube pre: the SP-8 is well regarded for its open, textured midband, strong phono stage, and genuinely “grown-up” line-stage drive, so a clean, working example has real appeal. At this price, the upside is in condition and completeness—recent service, strong tube life, and original accessories/manuals would all help justify it; if it’s genuinely excellent and well sorted, it’s a sensible buy rather than a speculative one.
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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