RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
**Harman Kardon Citation Twelve Dual Mono Block Power Amplifier - 1970s - Vintage**Up for sale is a classic piece of American hi-fi history: a 1970s Harman Kardon Citation Twelve solid-state power amplifier. Known for its incredible build quality and warm, tube-like musicality, this iconic amplifier is highly regarded for its dual-mono internal architecture. ### **Design & Performance**Featuring two completely independent power supplies, separate transformers, bridge rectifiers, and filter capacitors, it operates essentially as two separate mono block sections built into a single, heavy-duty 30-pound chassis. The only shared component is the power cord, ensuring maximum channel separation, immense headroom, and absolute stability under heavy loads. It effortlessly pushes 60 Watts RMS per channel into 8 Ohms.### **Operational Condition*** **Fully Tested:** Bench-tested and 100% operational.* **Audio Quality:** Outstanding performance with dead-quiet operation, a tight, dry bass response, and crystal-clear highs. * **Channels:** Fully balanced output on both channels with stable bias.
At US$599, this sits above your local market anchor: it clears the 75th percentile at US$524, so it reads as an ambitious ask rather than a fair-market buy. With a median of US$450 and a 25th percentile of US$375, there’s not much room to call this a bargain unless the condition is exceptional or it includes meaningful extras.
That said, this is a respected vintage power amp: the Citation line has a strong reputation for solid build, clean power delivery, and a musical, no-nonsense presentation. If it’s truly clean, original, and fully healthy, the upside is a desirable classic in a format that’s getting harder to find intact. At this price, I’d want clear proof of service history, stable operation, and cosmetic condition before paying up.
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.
