RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
Vintage TUBE Harman Kardon Tube amplifier! My father In law has had this on the shelf for many years. he has asked me to sell it for him. even has some original Harman Kardon tubes in it! this needs someone that knows vintage tube amps as it has been sitting for many years. IE 30+ will need to be gone through and the vintage capacitors replaced etc most likely. restored these are selling for quite a bit. It is sold AS-IS to someone that can give it some love and make it sing again!
This is a buyer’s market for the listing: at US$275, it lands well below the US$373 25th percentile and far under the US$471 median of the recent USD comps, so it reads as a strong deal rather than a merely fair ask.
What makes it appealing is the Harman Kardon A300’s reputation as a classic vintage tube integrated amp with a warm, musical presentation that a lot of listeners still prize. At this price, the upside is real if it’s complete and healthy; the main thing to assess is service history, since old tube gear often rewards a careful check of capacitors, pots, transformers, and whether it’s been properly brought back to spec.
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.
