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Engineered to excel with both MC and MM phono cartridges, the Doshi Phono Preamplifier includes a Moving Coil Pre-Preamplifier whose J-Fet transistors provide 26 dB of gain, followed by a pair of monaural, 2:1 step-down transformers which lower gain to 20 dB. Although MC head amps often use step-up transformers (i.e., to increase gain) our novel use of step-down transformers accomplishes three critical benefits: Provides Galvanic Isolation, keeping Pre-Preamplifier grounds separate from the rest of the preamp Converts balanced cartridge input to single ended output, enabling our “Zero-Feedback” tube circuit Impedance is stepped-down 4:1, providing increased bandwidth and a low impedance output to drive the tube MM section.
OVERVIEW
Good condition Pre-Owned Doshi V3.0 Phono Stage, Silver
Power Cable, Remote, Will be packed in third party packaging for shipment
Rated 7/10 for minor cosmetic wear consistent with age and use.
SPECIFICATIONS
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Type: Hybrid tube / J-FET phono preamplifier
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Cartridge Compatibility: Moving Coil (MC) and Moving Magnet (MM)
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Inputs: 3 total — 1 MC input with adjustable loading, 1 MM input (10kΩ), 1 MM input (47kΩ)
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Outputs: RCA and XLR
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Gain: 72dB total gain (MC); 50–52dB MM gain depending on specification listing
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MC Loading: Adjustable from 10Ω to 250Ω in 10Ω steps, and 250Ω to 6kΩ in 20Ω steps
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MM Loading: Selectable 10kΩ and 47kΩ inputs
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Output Impedance: 250Ω; capable of driving loads of 10kΩ and higher
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MC Head Amp: J-FET differential input stage with transformer coupling
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Circuit Design: Zero-feedback tube gain stage with passive RIAA equalization
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Tubes: 2 × ECC83 / 12AX7, 2 × ECC81 / 12AT7, 2 × 7247 / 12DW7
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Controls: Microprocessor-controlled input selection, cartridge loading, and phase adjustment
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Remote: Included remote handset for setup adjustments
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Construction: 14-gauge stainless-steel chassis with Corian isolation top plate
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Isolation: Three Stage Decoupling™ vibration-control system
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Power Supply: Separate oversized external power supply with shielded umbilical cable
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Internal Construction: Point-to-point wired critical audio circuits
ADDITIONAL INFORMATION
Please call 734.662.3595 and ask for Richard if you have any questions about this product.
We make every effort to update our ads quickly when inventory fluctuates, but we encourage you to call and check product availability, as we are also a brick and mortar store.
Pre-owned and priced at US$8,995, this sits well above the typical used market for this piece: the recent comparable median is US$6,000, with the 75th percentile at US$7,498, so the ask is ambitious. It’s not an automatic pass, but it needs something special—mint cosmetic condition, full packaging, recent service, or strong provenance—to justify the premium.
That said, this is a respected phono stage for serious analog systems: Doshi gear is known for a very refined, quiet, highly resolving presentation with excellent tonal density and dynamic ease. If the unit is truly clean and complete, it could still be worthwhile for someone specifically chasing this level of performance, but at this price I’d want confirmation of tube hours, any service history, and included accessories before calling it a buy.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Doshi Audio: Brand Overview
Doshi Audio was founded in 2006 by Nick Doshi, a former recording engineer with decades of experience capturing live performances. The company emerged from Doshi's hobby of building audio equipment for friends in the New York/New Jersey audiophile community, which eventually attracted international interest. What began as a personal passion evolved into a formally structured business dedicated to translating the nuances of the original musical event into the listening room. The brand is handcrafted in America and remains owner-operated by its founder.
The company specializes in high-end tube amplifiers and preamplifiers, with a focused product range that includes full-function preamplifiers, line stages, and phono stages. Doshi's engineering philosophy emphasizes precision transformer design—notably the 31-position volume control transformer developed through collaboration with Brian Sowter—and meticulous attention to signal integrity. The Evolution Series represents the company's current amplifier line, reflecting ongoing refinement of their core design principles.
Doshi Audio occupies the premium boutique segment of high-end audio, known for uncompromising sound quality and reliability rather than mass-market appeal. The brand has cultivated a strong reputation among discerning audiophiles seeking components that prioritize fidelity to the source material and trouble-free operation. With a deliberately limited product range and handcrafted manufacturing approach, Doshi Audio positions itself as a niche manufacturer for serious music lovers willing to invest in equipment designed for a lifetime of musical satisfaction.
See all Doshi Audio listings on RADAR.
