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Dodd Audio Battery-Powered 6922 Tube Preamplifier w/ Remote, ChargerRare Dodd Audio battery-powered tube preamplifier in excellent cosmetic and operating condition. The Dodd’s battery-powered design isolates the audio circuitry from the AC line, producing an exceptionally quiet background with excellent dimensionality, tonal body and natural instrumental texture. It is particularly impressive with efficient speakers and high-quality tube or solid-state power amplifiers.Features include multiple line-level inputs, two sets of outputs, selectable dual battery banks and remote volume control. The walnut enclosure and matching wooden remote are especially attractive.Includes:• Matching Dodd Audio wooden remote• Original charger• Four batteries• Pair of Westinghouse 6922 tubesThe preamplifier operates properly and presents very well, with only light signs of careful use. The chrome knobs are intact and highly reflective; any irregular appearance in the photographs is reflection rather than pitting.Gary Dodd’s components were produced in limited numbers and have developed a loyal following. This is a difficult preamplifier to replace at its current used-market price.It will be carefully packed for safe shipment. Local audition and pickup are also welcome in the Houston/Sugar Land area.
At US$2,400, this sits well above the typical used market for comparable listings: the median is US$183 and even the 75th percentile is US$837, so the asking price is firmly ambitious unless there’s something unusually special here. For a line stage, that means the seller is asking for strong provenance, originality, or a very high-end implementation.
The upside is that well-executed tube preamps can bring real scale, dimensionality, and texture, and battery power can be a meaningful advantage if the design is quiet and properly maintained. This is only compelling if the unit is in excellent cosmetic and electrical shape, with a healthy battery system, known service history, and all the right accessories; otherwise, the price leaves very little room for risk.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Line Magnetic Audio: Brand Overview
Line Magnetic Audio was established in 2005 in Zhuhai, China, by brothers Zheng Cai and Zheng Xi, both passionate audiophiles with deep roots in tube electronics. Zheng Cai's background as a former general manager and chief engineer at Cayin, combined with years spent studying and restoring classic Western Electric, Altec, and Jensen components, provided the technical foundation for the company. This heritage of reverse-engineering and understanding legendary 1950s American audio design remains central to Line Magnetic's identity and philosophy.
The brand specializes in tube-based electronics and speakers, with a product range spanning integrated amplifiers, preamplifiers, power amplifiers, DACs, phonostages, and horn-loaded loudspeakers. Line Magnetic is particularly renowned for its meticulous replicas of classic Western Electric, Altec, and Jensen designs, as well as proprietary field-coil drivers that have earned respect among both manufacturers and DIY enthusiasts. All products are hand-assembled using point-to-point wiring across two factories, reflecting an uncompromising manufacturing philosophy.
Line Magnetic occupies the high-end boutique segment, targeting discerning collectors and audiophiles who value vintage-inspired design married with modern engineering. The brand commands respect for its scholarly approach to audio history, rigorous material research, and unrelenting build quality. Rather than pursuing mass-market appeal, Line Magnetic has cultivated a devoted global following among those seeking authentic tube sound and meticulous craftsmanship.
See all Line Magnetic Audio listings on RADAR.
