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The M23 has a strong reputation as one of NAD’s cleaner, more powerful Purifi-based class-D amps, and at £2,900 this asking price sits below your £3,528 median and just above the £2,659 25th percentile. That makes it a good buy, close to the value edge rather than merely fair.
What makes it appealing is the combination of high current delivery, low noise, and real-world control over speakers that can sound a bit loose on lesser amps. If the unit is genuinely well cared for, this is the sort of listing that can save you a meaningful chunk versus typical market asking prices while still getting a highly regarded, current-generation power amp. With condition unknown, I’d mainly want clarity on cosmetics, original packaging, and whether it’s been run in a proper rack with decent ventilation.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
NAD Electronics was founded in 1972 in London by a group of European audio importers frustrated with the hype surrounding Japanese hi-fi products. Led by visionary American executive Martin L. Borish and brilliant engineer Bjorn Erik Edvardsen, the company emerged from a quest to deliver high-performance audio at accessible prices. Their breakthrough came with the NAD 3020 integrated amplifier, the best-selling hi-fi amp in history, which embodied a philosophy of stripping away non-essentials to prioritize pure sound quality.
The brand focuses on core hi-fi categories, excelling in amplifiers—pioneering Class A/B, Class G, and hybrid digital designs—alongside integrated receivers, AV processors, turntables, CD and cassette players, and modern streamers. While not venturing into speakers, headphones, or cables, NAD emphasizes source components and amplification that integrate seamlessly into home theater and custom installation setups, always upholding principles of innovation, simplicity, performance, and value.
Today, as part of Canada's Lenbrook Group and sold in over 80 countries, NAD holds a commanding mid-tier position in the market, revered by audiophiles for affordable excellence rather than ultra-high-end excess. Its "Truth in Power" legacy earns cult status among knowledgeable buyers seeking reliable, award-winning gear that punches above its price, blending vintage heritage with contemporary streaming and hybrid tech.
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