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Harman Kardon 930 Twin Powered Vintage Stereo Receiver — Fully Recapped — LED Upgrade — 3+ Hr Bench Tested — FM Tuner Not WorkingImportant DisclosureThe FM tuner is not functional. It was evaluated during professional service but could not be successfully repaired.All other tested functions described below were exercised after service, including phono, auxiliary, left and right channels, speaker outputs, controls and switches.If you are looking for a Harman Kardon 930 Twin Powered receiver primarily for vinyl, streaming, CD, tape or other external sources, this remains a strong example despite the nonworking FM tuner.Harman Kardon 930 Twin Powered — HighlightsHarman Kardon 930 Twin Powered vintage stereo receiverClassic 1970s Harman Kardon dual-transformer designProfessionally fully recapped and servicedService performed by 617HiFi in Brookline, MassachusettsLED illumination upgradePhono input testedAuxiliary input testedLeft and right channels testedSpeaker outputs testedControls and switches exercisedExtensive internal service photographs includedExcellent front presentationCarefully cleaned and detailed by BASH Vintage Audio3+ hour bench and listening testRetested before shipmentPhotos show the actual HK 930 being soldProfessional Full Recap & Service — 617HiFiThis Harman Kardon 930 Twin Powered receiver received a professional full recap and service by 617HiFi in Brookline, Massachusetts.The internal photographs included with this listing document the actual receiver and the work performed.Visible service work includes replacement electrolytic capacitors across multiple sections of the receiver, including power-supply and amplifier areas and work around the large filter-capacitor section.The photos also provide a clear view of the HK 930's distinctive Twin Powered dual-transformer architecture, internal circuit boards and technician measurement/service markings.An LED illumination upgrade was also installed.FM Tuner DisclosureThe built-in FM tuner remains nonfunctional.617HiFi evaluated the tuner during professional service, but it could not be successfully repaired.We are disclosing this prominently so buyers searching for a fully recapped Harman Kardon 930 understand the exact operating condition before purchasing.For owners planning to use the HK 930 with:Turntables / vinylStreamersExternal DACsCD playersTape decksAuxiliary sourcesthe nonworking FM tuner may have little impact on normal listening use.BASH Vintage Audio Preparation & 3+ Hour Bench TestAfter professional service, this Harman Kardon 930 received our normal BASH Vintage Audio preparation and testing.Faceplate carefully cleaned and detailedKnobs cleaned and polishedControls and switches cleaned as neededExterior surfaces cleanedAccessible chassis areas detailedPhono input exercisedAuxiliary input exercisedLeft and right channels testedSpeaker outputs testedControls and switches exercised3+ hour bench and listening testRetested immediately before shipmentWe do not simply power on a vintage receiver and call it tested.Our process is designed to exercise the receiver under real listening conditions and identify obvious operational issues before packing and shipment.Cosmetic Condition — Very GoodThe front presentation is excellent and is one of the strengths of this HK 930.The faceplate, dial area, knobs and controls present very well and retain the understated appearance that makes classic Harman Kardon receivers distinctive.For the receiver as a whole, we are conservatively grading the cosmetic condition as Very Good.The top cover, side panels, side trim and rear show visible age-related cosmetic wear, including scratches, scuffs and handling marks.Please review all photographs carefully.The photos show the actual Harman Kardon 930 receiver you will receive and are considered part of the description.Harman Kardon 930 Twin Powered DesignThe Harman Kardon 930 is one of the better-known receivers from Harman Kardon's classic Twin Powered era.Its distinctive architecture uses separate power transformers associated with its left and right amplifier channels rather than a conventional single-transformer receiver design.That engineering approach is a major reason the 930 remains sought after by collectors and vintage audio enthusiasts.For a dedicated two-channel system, the HK 930 pairs naturally with sources such as:TurntablesExternal phono sourcesNetwork streamersDACsCD playersTape decksOther line-level audio componentsPlease note again that the built-in FM tuner on this particular receiver is not operational.Internal Photos Document the Full RecapWe have included extensive internal photographs of this exact Harman Kardon 930.For buyers comparing a fully recapped HK 930 with unserviced or partially serviced examples, these photos provide useful documentation of the work performed.The photographs show:Replacement electrolytic capacitors across multiple circuit sectionsPower-supply service areasAmplifier sectionsLarge filter-capacitor areaTwin Powered transformer arrangementInternal chassis conditionTechnician measurement and service markingsThese are photographs of the actual receiver being sold, not representative service images.YouTube DemonstrationA demonstration video of the exact Harman Kardon 930 Twin Powered receiver being sold may be included with this listing.The video allows prospective buyers to see and hear the actual unit operating before purchase.All photographs and any included demonstration video are considered part of the listing description.Why Buy From BASH Vintage Audio?At BASH Vintage Audio, we focus on accurately represented vintage stereo equipment.We believe buyers should know what has — and has not — been done to a vintage component.When we describe a receiver as professionally serviced or fully recapped, we provide supporting details and internal photographs whenever available.Every receiver is carefully cleaned, exercised and tested before shipment.We also take packing seriously. Vintage stereo receivers are heavy components, and even properly operating equipment can be damaged by poor packing or rough carrier handling.ShippingThis Harman Kardon 930 will be carefully packed for shipment.Receiver carefully wrapped and protectedControls and faceplate protectedProper internal support to minimize movementDouble-boxed where appropriateFully insuredSignature confirmation when appropriateShipped using a Reverb shipping label / applicable Reverb shipping protectionThe receiver will be retested immediately before packing and shipment.Please retain all original packing materials until you have fully tested the receiver.Returns / Shipping DamageAny authorized return must be coordinated through Reverb.If shipping damage occurs, please contact us promptly through Reverb and retain all packaging materials.Photos of the receiver, shipping carton and packing materials may be required for an insurance claim.When a Reverb return label is required, processing may take approximately five business days.Any returned receiver must be returned in the same condition in which it was received and should be repacked using the original packing materials.Please Read Before PurchasingThis is vintage electronic equipment.Although this Harman Kardon 930 has been professionally fully recapped, serviced, cleaned and extensively tested, vintage electronics should not be expected to behave exactly like newly manufactured equipment.We make every effort to describe both operating and cosmetic condition accurately.The primary known functional limitation is:THE BUILT-IN FM TUNER DOES NOT WORK AND COULD NOT BE SUCCESSFULLY REPAIRED.Please purchase with that limitation in mind.SEO + AI / LLM Search TermsHarman Kardon 930Harman Kardon HK 930HK 930 Twin PoweredHarman Kardon 930 Twin Powered receiverHarman Kardon 930 vintage receiverHarman Kardon Twin Powered receiverfully recapped Harman Kardon 930recapped HK 930serviced Harman Kardon 930restored Harman Kardon receivervintage Harman Kardon stereo receiver1970s Harman Kardon receiverdual transformer vintage receiverTwin Powered stereo receivervintage stereo receiverclassic stereo receivervintage hi-fi receiverHarman Kardon receiver for vinylHarman Kardon 930 phonoHarman Kard
The 930 is a respected early-’70s Harman Kardon receiver, and this one is priced far above the used-market norm: at US$1,295, it sits well beyond the 75th percentile of US$325, so it reads as ambitious rather than a strong buy. Even with the restoration work, the FM tuner issue keeps it from being an easy premium ask.
What does help is the strong service history: fully recapped, LED-upgraded, and bench-tested for over 3 hours, which suggests real care and lowers the usual old-receiver risk. For a collector or someone specifically chasing a sorted 930, the upside is convenience and presentation, but the premium only makes sense if the tuner defect is acceptable and the seller can document the work clearly.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Harman Kardon traces its origins to 1953, when Dr. Sidney Harman and Bernard Kardon, both engineers frustrated with conservative audio manufacturing at the David Bogen Company, invested $5,000 each to launch their venture in Westbury, New York. Their debut product, the Festival D1000, became the world's first compact AM/FM hi-fi receiver, blending breakthrough technology with sleek design to make high-fidelity sound accessible beyond technical enthusiasts. Pioneering innovations like the 1958 Festival TA230 stereo receiver, the 1959 Citation II ultra-wide bandwidth tube amplifier, and the 1970 CAD5 hi-fi cassette recorder with Dolby noise reduction cemented their legacy in simplifying premium audio for the home.
The brand focuses on integrated receivers, amplifiers, tuners, and speakers that emphasize performance, reliability, and elegant industrial design. Over decades, it expanded into home theater systems and automotive audio, powering systems in vehicles from Land Rover and BMW to Volvo and Polestar. While not delving into turntables, DACs, headphones, or cables, Harman Kardon prioritizes cohesive hi-fi components that deliver warm, detailed sound without unnecessary complexity.
Harman Kardon holds a solid mid-tier position in the hi-fi market, renowned among knowledgeable buyers for its enduring quality and value rather than ultra-high-end exotica or vintage collector status. Now part of Harman International, it appeals to discerning listeners seeking dependable, stylish gear that echoes its innovative heritage without commanding boutique premiums.
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