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SW1X MPA V Atlas Monoblock Power Amplifiers. In excellent as new condition. rnrnUpgraded Brass feet. Upgraded Sapele Hardwood base.
At £14,000, this is well above the typical used GBP range for comparable listings, with the median at £8,773 and even the 75th percentile only £9,624. That makes this an ambitious asking price rather than a fair-market bargain, so I’d want strong proof it justifies the premium before considering it seriously.
That said, the monoblock format and excellent condition can make a meaningful difference if these are genuinely special examples: they’re the sort of amps people buy for grip, scale, and effortless drive, not just wattage on paper. If they come with full provenance, matching pair, and any original packaging or documentation, that helps; otherwise, at this level, I’d expect room to negotiate quite a bit.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
SW1X Audio Design, founded by Dr. Slawa Roschkow—a Russian engineer who settled in Great Britain via Germany—traces its roots to Essex, England, where all products are designed and hand-assembled. Pronounced "As One eX Audio Design," the brand embodies Roschkow's vision as founder, managing director, and chief audio engineer to push the boundaries of musical authenticity. From its inception, SW1X has prioritized timeless, high-performance equipment over cost constraints, resurrecting the soul of recordings through meticulous craftsmanship.
The brand specializes in extreme, valve/tube-based audio components, including DACs like the DAC III and DAC II SPX, alongside amplifiers and integrated systems that ascend through performance levels from I to X. These designs eschew modern oversampling in favor of non-oversampling discrete R2R architectures, delivering fluid, organic sound. SW1X focuses on pure analog-like reproduction, with each tier refining circuits for greater lushness and expressiveness, appealing to purists seeking unadulterated musicality.
Positioned as a niche boutique in the high-end hi-fi market, SW1X commands a cult following among discerning audiophiles for its upbeat, soulful presentation that redefines digital and tube playback. Reviewed glowingly in specialist forums and publications, it stands apart from mass-market offerings, thriving in exclusive showrooms like Germany's Audio Creativ. For knowledgeable buyers, SW1X represents uncompromising excellence in a crowded field.
See all SW1X listings on RADAR.
