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Offered is „IA-4“ by Sugden as second-hand device from the category „Fully integrated Amplifier“ on audio-markt.de - the online market place for high-end. The advert with the number 5018287451 ends on 31.10.2026 at 20:08 o'clock.
The Sugden IA-4 is a rare British current-source integrated known for its whisper-quiet, music-first delivery, but €5,590 is ambitious for a used unit. Typical used pricing sits between €2,000 and €3,200, with a recent listing at €2,900 and another at €5,000 for an exhibit model, making €5,590 well above the median. Even the current retail is around €5,500–€6,950, so paying nearly new money for a used amplifier offers little upside unless it’s pristine, original-owner, and includes every accessory.
This amp shines with its 33W current-source output, MM phono, balanced inputs, and a sound that prioritizes texture and timing over brute force. It’s worth chasing if the price drops to €2,500–€3,000, where it becomes a genuine bargain. At €5,590, it’s only a buy if the condition is flawless and the seller includes the remote and original packaging, but otherwise, it’s overpriced for the used market.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Sugden Audio: British Heritage and Class A Excellence
Sugden Audio was founded in 1967 by James Edward Sugden in Cleckheaton, West Yorkshire, as a division of Research Electronics, his earlier scientific instrument manufacturing company. Sugden's background in precision engineering and broadcast equipment design at EMI informed the company's founding philosophy of meticulous craftsmanship and sonic integrity. The brand has remained rooted in British manufacturing throughout its history, maintaining its West Yorkshire base and family involvement through successive generations, most recently under the stewardship of the Miller family alongside the long-term Sugden team.
The company is synonymous with Class A solid-state amplification, having pioneered this technology with the legendary A21 integrated amplifier in 1967—widely recognized as the first commercially produced pure Class A solid-state amplifier. Sugden's product portfolio centers on high-end electronics, particularly integrated and power amplifiers, alongside preamplifiers. The brand's design philosophy emphasizes minimalism and musicality over unnecessary features, captured in their tagline "Rescuing Music from technology." All products are hand-built to exacting standards, reflecting Sugden's commitment to quality over mass-market appeal.
Sugden occupies a distinctive position in high-end audio as a niche boutique manufacturer with deep credibility among serious audiophiles and collectors. The A21 remains in continuous production—now in its A21a iteration—making it one of the longest-running models in specialist hi-fi. Vintage Sugden equipment has become highly sought-after by collectors, while contemporary designs maintain the brand's reputation for sonic excellence and engineering precision that has defined British audio craftsmanship for nearly six decades.
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