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This looks like a strong deal. At £400, it is comfortably below the roughly £799 new UK price, and a clean, working example would sit attractively beneath what this substantial transformer-coupled amplifier usually commands used. It is especially compelling if the listing includes all five original valves, the cage, and its dedicated power lead.
The HA-1A MK2 is well regarded for its bold, dynamically charged tube presentation, excellent tonal density, and considerable power with high-impedance headphones. Its five output-impedance settings make matching unusually flexible, while the two headphone outputs offer subtly different voicings; the pre-out also lets it serve as a tube preamplifier. At £400, sensible checks are simply valve condition, hum, channel balance, and whether both headphone outputs and the impedance selector work properly.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Cayin Audio traces its roots to 1993, when Zhuhai Spark Electronic Equipment Co., Ltd. was established in Zhuhai, China. From the outset, the company focused on crafting audiophile-grade components under the Cayin brand, blending Eastern precision with a passion for musical fidelity. Over three decades, it has evolved from traditional hi-fi roots into a multifaceted player, emphasizing equipment that delivers exceptional sound across diverse price points to democratize high-quality audio.
The brand excels in a broad spectrum of categories, with its vacuum tube amplifiers standing out as flagship offerings renowned for warmth and detail. Its portfolio extends to CD players, speakers, digital audio players (DAPs), desktop systems like the i-series, portable amplifiers, in-ear monitors, and even innovative DACs such as the compact RU2 dongle. Since venturing into personal audio in 2013, Cayin has prioritized portable and lifestyle solutions, including the N-series DAPs, all while maintaining rigorous build quality with premium materials like milled aluminum and walnut wood.
Cayin holds a solid mid-to-high-end position in the global hi-fi market, prized by discerning buyers for its value-driven performance and cultural depth. It bridges accessible excellence with boutique appeal, earning acclaim for tube amps that rival pricier rivals, without veering into ultra-esoteric territory. This Chinese powerhouse continues to carve a lasting niche among knowledgeable enthusiasts seeking reliable, soulful sound.
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