RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
For your consideration is a Harman Kardon 430 Twin Powered Stereo Receiver from 1975 in great condition with a complete recap and all troublesome transistors replaced (90+ parts replaced and upgraded, details below and pictures of replaced components). Cosmetically I would conservatively rate it 8 out of 10, for sound 10 out of 10 clean pristine sound on all inputs/outputs/functions/switches/buttons. The work done has returned this unit to its full original sonic glory. SEE FULL UPGRADE DETAILS BELOW AND REVIEW ALL PHOTOS CAREFULLY TO EVALUATE CONDITION. If you're here, you probably already know but this is a legendary receiver with big, warm clean sound far beyond its rated 25 watts per channel. These units are renowned for their twin amplifier transformers and classic sound. In an era where most companies were chasing more watts, Harman Kardon engineers focused on other metrics to improve sound at lower wattage delivering sound quality that exceeds its power rating and price point, making it a coveted item among collectors and music lovers. If you like that Harman Kardon "look", this one has it. I don't think a better looking receiver has been made. This thing looks slick, even in rooms with modern decor. You can't beat the style of this receiver and it has the goods under the hood to match.COSMETICS - There are a few light marks on the face and side aluminum trim pieces and 2 small dings in the bottom face edge. Review all photos for physical condition assessment, I have photographed all imperfections. The cover does have some noticeable discretion and one inch long gouge, zoom photos.UPGRADES - RECAPPED all boards (49 total including filter capacitors) and all all known troublesome/noisy transistors replaced in Power Amp (8 total), Tone Board (6 total), Phono Board 4 total) with modern equivalents for reliable performance and clean, pristine sound across all functions. Bias has been set to factory specifications. All dial lights, stereo bulb, power button bulb and dial pointer bulb have been replaced with LEDs, a much more reliable option. All pots/switches treated with appropriate deoxit d5 or f5, all functions sound pristine and clear at all levels.The FM receiver works great and the unit sounds amazing even in my rural part of the country, an attached antenna helps bring in further away stations. It will blow the roof off the house if you want it to, the sound fills the room and stays clean no matter the media or the volume. I strongly recommend playing with "contour" button engaged to hear the full potential of any Harman Kardon from this era, it is truly a warm, bright, clean sound. This truly is an incredible piece of equipment, these models really do live up to their sterling reputation and this is an opportunity to own a really nice upgraded HK 430. I have many years restoring, selling and shipping heavy, vintage stereo equipment. This will be thoroughly and adequately packaged for safe shipping. I will also purchase insurance so buy with peace of mind knowing this will arrive as seen/described, should anything happen, we are insured and covered on this transaction. Specifications:Tuning range: FM, MWPower output: 25 watts per channel into 8Ω (stereo)Frequency response: 20Hz to 20kHzTotal harmonic distortion: 0.3%Damping factor: 40Signal to noise ratio: 65dB (line)Speaker load impedance: 4Ω to 16ΩDimensions: 432 x 368 x 140mmWeight: 25 lb.
This US$1,100 asking price is ambitiously high, sitting more than triple the 75th percentile (US$325) and far above the median of US$172 for comparable Harman Kardon receivers in the used market. While the listing notes an upgraded unit with a recap and new transistors, the price remains significantly overvalued even for a serviced model, as typical excellent-condition HK 430s on eBay recently sold between US$150 and US$315. This is not a bargain; it is a steep premium that ignores the established ground truth of recent sales data.
The Harman Kardon 430 is a legendary 1976 receiver prized for its big, warm, and clean sound that far exceeds its rated 25 watts per channel, making it a worthy vintage buy when priced fairly. However, at US$1,100, the timing and value proposition are questionable unless the unit includes rare original accessories or is in pristine, original-owner condition with verified documentation. For a fellow enthusiast, this listing represents an overpriced opportunity rather than a smart buy, especially given the abundance of similarly serviced units available at US$200–US$300.
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.
See all Harman Kardon listings on RADAR.
eBay Australia
AU
Reverb
Kleinanzeigen
Fair
DE
Marktplaats
Marktplaats
Marktplaats
