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Would you be happy paying £3,572 for a No.23.5, or are you overpaying for the badge? Based on the model’s known used-market history, that asking price looks ambitious rather than fair: a well-kept example has been seen around £1,400 after converting the $1,800 shelf price noted for one unit, and the original amplifier line carried a £4,000-plus class of new-price pedigree, so this listing is sitting much closer to the top end of where you’d want it to be.

The reason people still chase this amp is simple: the 23.5 is widely regarded as one of the best of the classic Mark Levinson solid-state power amps, with real grip, scale, and drive that suit demanding speakers. It’s a worthwhile buy only if the unit is exceptionally clean, fully serviced, and ideally comes with proof of recap or expert maintenance; at this price, age-related service history matters, because you’re paying for condition and confidence as much as sound.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About Mark Levinson

Mark Levinson Audio Systems originated in 1972 in New Haven, Connecticut, USA, founded by musician and audio innovator Mark Levinson. A professional multi-instrumentalist with a keen ear for sound reproduction, he launched the brand to bridge the gap between studio fidelity and home listening, debuting with the groundbreaking LNP-2 preamplifier—the world's first high-end audio product. Though Levinson later pursued ventures like Cello and Red Rose Music after parting ways with the company in 1980, the Mark Levinson name endures as a cornerstone of American hi-fi heritage.

The brand specializes in premium solid-state electronics, renowned for meticulously engineered amplifiers, preamplifiers, integrated amplifiers, and digital-to-analog converters (DACs). Its Pure Path circuit design and innovations like the R-2R ladder volume control define a lineup that prioritizes uncolored, reference-level performance. While early offerings included power amps like the ML-2 monoblocks, today's portfolio under Harman International ownership extends to high-end streaming components and turntable-compatible gear, all crafted for audiophiles seeking precision over compromise.

Positioned firmly in the ultra-high-end market, Mark Levinson commands reference status among discerning buyers, synonymous with no-compromise build quality, natural timbre, and benchmark transparency. Over five decades, it has set industry standards, attracting collectors and enthusiasts who value its legacy of pushing sonic boundaries through superior materials and engineering excellence.

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