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Original owner, perfect working condition- great warm sound. Some minor scratches (see pics). Serial #GT0007-01609 2x 200 watts 8 ohms- 650 watts bridged. This is one of two matching units, perfect for bi-amping. Free shipping to the lower 48 states.
At US$800, this lands well above the typical used market for a Harman Kardon Signature 2.1 subwoofer: the median comparable asking price is US$300, with the 75th percentile at US$800, so this is at the very top of the recent range rather than a bargain. That makes it an ambitious ask unless the condition and completeness are exceptional.
What keeps it interesting is the Signature 2.1’s reputation for strong, musical low end and its place in Harman Kardon’s better-regarded vintage separates line. If this is truly clean, fully functional, and includes the right matching pieces or rare original extras, there’s real appeal for a collector or a system builder; otherwise, at this price, buyers should be looking for proof of condition and originality before jumping in.
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.
