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Vintage serviced and cleaned Soundcraftsmen SP4002 preamp with amazing phono stage!Listed on other sites and locally! Could end at any time! OverviewUp for sale is a stunning, near-mint example of the legendary Soundcraftsmen SP4002 Signal Processing Preamplifier. Made in the USA during the golden era of analog audio, this high-performance preamplifier combines a highly transparent, audiophile-grade preamp section with an integrated dual 10-band octave graphic equalizer. This specific unit has been meticulously cared for and was recently given a clean bill of health by a professional vintage audio specialty shop. It looks beautiful, performs flawlessly, and is ready to plug and play in your vintage or modern high-end setup.Professional Service & Bench Test DetailsUnlike most vintage Soundcraftsmen units on the market that suffer from scratchy controls, this unit has been professionally serviced to ensure peak performance:Controls & Sliders Deep Cleaned: All 20 graphic equalizer sliders functional and operate with zero static or noise.Rear Jacks Conditioned: All rear RCA input/output jacks were cleaned of oxidation to ensure a pristine, reliable signal path.Bench Tested: The unit was put through a comprehensive bench test. All inputs (including both exceptional Phono stages), tape loops, and routing functions are confirmed 100% operational.Cosmetic & Functional ConditionCosmetics: Near-mint condition. The faceplate is incredibly clean with crisp, unblemished lettering. The chassis shows virtually no signs of age. Please see the high-resolution photos to appreciate just how well-preserved this unit is.Functionality: 100% working order. The dual-equalizer zero-gain controls balance perfectly, and the tone bypass mode delivers the legendary transparent, uncolored analog sound these units are famous for. The adjustable Cartri-Match phono section sounds spectacular.Specifications & FeaturesDual 10-Band Graphic Equalizer with EQ pair LEDsSubsonic filter and tone bypass modesCartri-Match Phono section with adjustable loading (50 to 800 picofarads)Inputs: Phono 1, Phono 2, Tuner, Aux, plus three Tape loops with three-way dubbingStandard 19" rack-mountable chassisShipping & HandlingVintage audio gear requires expert handling. This unit will be packed with extreme care using heavy-duty boxes and high-density foam wrapping to ensure it arrives at your doorstep exactly as it left mine. Fully insured shipping with tracking. Local pickup is also welcome.Will be sold AS-IS with no returns on vintage audio gear like this beautiful preamp!
This one is around fair value, not a steal: at US$699 it sits a bit above your US$625 median, but still well below the US$989 75th percentile, so it reads as a reasonable ask for a serviced unit rather than an aggressive one.
The timing is decent because this is a vintage preamp from a less-common era, and Soundcraftsmen pieces have a following for solid build and a punchy, full-bodied presentation that still suits vinyl and classic two-channel rigs. The “serviced” note is the real upside here: if the recap/cleaning was done properly and the controls are quiet, that can save you time and restoration cost. Just confirm what service was actually performed and whether any parts, switches, or jacks were addressed.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Soundcraftsmen emerged in 1961 from Santa Ana, California, founded by Ralph Yeomans, a concessionaire at the discount chain Fedco. Starting with tube-based receivers and amplifiers, the brand quickly carved a niche in the burgeoning high-end audio scene of southern California, blending American ingenuity with a focus on robust, performance-driven designs that appealed to early audiophiles seeking superior sound reproduction.
The company's product focus centered on amplification and signal processing, particularly preamplifiers, power amplifiers, and innovative equalizers. By the mid-1970s, Soundcraftsmen introduced pioneering preamp/equalizer combos and their signature "brick" style compact power amps, which became hallmarks of the lineup. These components emphasized precision control and dynamic power delivery, eschewing speakers, turntables, or modern digital gear like DACs in favor of analog amplification excellence.
Soundcraftsmen holds a revered position as a vintage collector's gem in the hi-fi market, prized for its 1970s and 1980s output that garnered a loyal audiophile following. Acquired by MTX in 1991, the brand faded from active production but endures among enthusiasts for its solid-state reliability and tunable sound, positioning it as a mid-tier high-end classic ideal for restoration projects and nostalgic systems.
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