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Convergent Audio Technology SL1 Renaissance Pre Amplifier Convergent Audio Technology SL1 Renaissance Tube PreAmplifier. Line Stage Only. Excellent condition. This is among the finest if not the finest ever built preamplifier. The SL1 has been manufactured since 1985 and it is still currently built. The current line stage model has a RRP of $30,000. I purchased this unit new around 2012-2013 from Greg Osborn from Osborn Loudspeakers who used to be the Australian distributor for CAT. Around two years ago I changed the tubes to the famous Telefunken E88CC and the Tesla E83CC (the direct replac
The CAT SL1 standard power cable stands out for its refined musicality and low noise floor, making it a hi-fi favourite in the sub-AUD10k accessory realm—far from unremarkable if you're chasing detail without harshness.
At AUD8,500 for a 1m used length, this sits ambitiously high against typical second-hand SL1 pricing of AUD4,500–6,500, assuming good condition; you'd need pristine build and original packaging to justify it over fresher stock. Before biting, verify the cable's age and burn-in history—early SL1s can suffer connector oxidation—and insist on original locking plugs plus any ferrite clamps, as replacements tank resale value. Test for microphonics under system load too.
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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