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This looks like a very ambitious ask. Against your recent comparable GBP set, £3,780 sits far above the £936 75th percentile and is nowhere near the £36 median, so it’s priced like a premium outlier rather than a normal used buy.
That only makes sense if these are genuinely special in build, provenance, or condition, because 300B monoblocks are bought for their texture, scale, and midband glow, not for bargain-bin economics. If the listing is complete and fault-free, the upside is a matched pair of serious SET amps from a cult-ish niche, but at this level I’d want strong evidence of recent servicing, fresh tubes, and rock-solid cosmetics before calling it a fair deal.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
California Audio Technology (CAT), founded in 1990 by brothers Brian and Michael Barr in the United States, emerged from a passion for uncompromised audio excellence. Headquartered in California, the brand quickly gained traction among elite clientele, including top recording engineers, A-list musicians, athletes, actors, and producers. Its heritage centers on delivering absolute sound quality tailored for demanding environments, reflecting a commitment to innovation that has sustained it for over three decades.
CAT specializes in high-performance integrated audio systems, encompassing amplifiers, preamplifiers, loudspeakers like the all-weather Music Bullet series, and complete setups optimized for homes, yachts, recording studios, and even airplanes. The company's products emphasize seamless integration and superior fidelity, often customized for bespoke installations rather than off-the-shelf retail.
Positioned firmly in the high-end market, CAT commands a niche reputation for exclusivity and reference-level performance, appealing to discerning audiophiles and professionals who prioritize authenticity over mass-market accessibility. Its systems are celebrated for lifelike reproduction that draws listeners into the music, though much of its work remains under-the-radar due to private commissions. For the knowledgeable hi-fi buyer, CAT represents the pinnacle of tailored, no-compromise audio engineering.
See all CAT listings on RADAR.
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