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At £199, this is a bit above the typical used market for this amp: it sits above the £166 median and also above the £188 75th percentile, so it reads as ambitious rather than a bargain. That said, it is not wildly out of line if the unit is genuinely clean, fully working, and presentable; with older integrateds, condition and originality matter almost as much as the sticker price.
It’s worth a look because the PM640 VXi is a respected late-era Harman Kardon integrated with a warm, substantial presentation and enough current to make modest speakers sound fuller and more relaxed. If the seller can confirm all inputs work, there’s no noise on the controls, and the fascia/case are tidy, it could still be a sensible buy for someone wanting that classic HK sound. At this price, though, you’d want clearer proof of condition or a small amount of wiggle room.
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.
