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New pricing has been around the high-A$3,000s, so A$2,923 used is a fair asking price rather than a bargain. It sits exactly at the supplied 75th-percentile comparable, above the A$2,271 median and A$2,157 25th percentile; negotiate if the unit is untested or lacks its original accessories.
The SDA-2400 remains an appealing, compact powerhouse: 200W per channel into 8 ohms, 400W into 4 ohms, with balanced XLR, RCA and coaxial/optical digital inputs. Its clean, low-noise PWM output stage, high damping factor and strong current delivery make it a versatile match for demanding speakers, while the light chassis and rack-mount capability are practical bonuses. At this price, verified operation, a quiet chassis, intact digital inputs and the remote/trigger accessories matter; a clean, complete example is worth considering, but not without some room to bargain.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Lyngdorf Audio was founded in 2005 by Danish audio innovator Peter Lyngdorf, who brought decades of industry experience to the venture. Lyngdorf's career in high-fidelity began in 1975 as a distributor of home entertainment components, followed by the establishment of HiFi Klubben, a Northern European retail chain, and the creation of DALI (Danish Audiophile Loudspeaker Industries) in 1983. This heritage of audio entrepreneurship and technical expertise informed the company's mission to achieve absolute perfection in sound reproduction through advanced research and development.
Lyngdorf Audio specializes in high-end digital amplifiers, preamplifiers, and surround processors built around proprietary technologies including the Equibit digital amplification system and RoomPerfect room correction software. The company is known for pioneering fully digital amplification and for integrating sophisticated digital signal processing into premium audio systems. Their product philosophy emphasizes the transformation of digital audio data directly into optimized speaker-driving signals, eliminating traditional analog conversion stages.
The brand occupies the luxury segment of the high-end audio market, positioning itself among the world's most sophisticated audio manufacturers. This positioning was solidified in 2007 when Steinway & Sons, the legendary piano maker, granted Lyngdorf exclusive rights to develop audio systems under the Steinway Lyngdorf brand name. Today, Lyngdorf Audio operates as part of the broader Steinway Lyngdorf portfolio, serving discerning audiophiles and professionals who prioritize cutting-edge digital technology and meticulous sound reproduction over conventional amplification approaches.
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