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Krell KSA50S Power Amplifier Beautiful Power Amp that needs no introduction if you know Krell and who the designer of their amps was. If I could keep everything I would. In fact if I had the space I’d have a house with 12 listening rooms all with a completely different set up that I could go to depending on my mood. As if that’ll ever be possible 🤪 Condition: Very Good Payment Method: EFT, Cash on Pick up Region/State: (WA) Western Australia/Australia By BetaBoy 1 Comments Secure Ad AUD $2,500 Date: August 20, 20241 yr
The timing is good if you want a classic Krell before prices drift up with scarcity: this is a 1990s, discontinued pure Class A design, so there’s no “wait for the next model” angle here. At A$2,500, the asking price looks fair to slightly strong, sitting close to the going used territory for a KSA-50S in very good shape rather than reading as a bargain.
That still makes it a worthwhile buy if the unit is clean and working properly, because the KSA-50S is admired for big-current drive, real Class A authority, and a sound that remains highly regarded decades on. The upside is mainly provenance and condition: if it’s been cared for, runs cool enough for spec, and includes the original box, manual, or recent service history, that supports the price. I’d only press hard on maintenance if there’s no evidence of a recap or inspection.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Krell Industries, founded in 1980 in the United States by Dan D'Agostino and his wife Rondi, emerged from a passion for pushing audio engineering boundaries. Based initially in Bridgeport, Connecticut, and later settling in nearby Orange, the brand drew its name from the advanced alien race in the 1956 film Forbidden Planet, symbolizing limitless technological power. The company's debut at the 1981 Consumer Electronics Show with the KSA-100, a high-power Class A amplifier, sparked immediate demand and established Krell as a force in American hi-fi innovation.
Krell specializes in high-end amplification, with its power amplifiers—epitomized by flagships like the Master Reference Amplifier—earning legendary status for their raw dynamics and precision. The lineup extends to preamplifiers, surround sound processors, digital-to-analog converters, CD and Super Audio CD players, loudspeakers, and subwoofers, all engineered for uncompromised performance in music and home theater systems.
Positioned firmly at the pinnacle of the high-end audio market, Krell commands respect among discerning audiophiles for its cutting-edge circuitry, massive power supplies, and relentless pursuit of sonic excellence. A top-tier brand alongside legends like Levinson and Threshold, it appeals to buyers seeking reference-level gear that defines the genre, even amid recent ownership transitions following Rondi's passing in 2024.
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