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Spectral Audio commemorates its forty-third year in the high-end audio industry with the introduction of Keith Johnson's new Reference Standard monaural amplifier, the DMA-500SV. The DMA-500SV builds on over forty years of advanced amplifier development at Spectral with our most ambitious design to date. The DMA-500SV reflects the milestone SV technology pioneered in the limited production DMA-500 Anniversay Reference monaural amplifier and is the culmination of years of basic research investment in state-of-the-art new generation amplifier design. The DMA-500SV brings the unmatched musical realism of the world renowned DMA-500 Anniversary to series production and a wider audience.
OVERVIEW
Very Good condition Pre-Owned Spectral DMA-500SV
Only used with MIT Cables
Boxes and packaging, Power Cables
Rated 8/10 for minor cosmetic wear consistent with age and use.
SPECIFICATIONS
• Reference-grade monoblock power amplifier featuring Spectral's flagship Super Veloce (SV) ultra-high-speed architecture.
• Power output: 350W @ 8Ω, 580W @ 4Ω, 750W @ 2Ω.
• Peak output current: 90 amps.
• Frequency response: DC–150 kHz (±0.1 dB), DC–1 MHz (±1 dB), DC–1.8 MHz (±3 dB).
• THD: typically 0.009% at 350W/8Ω;
The Spectral DMA-500SV is a legendary solid-state monoblock revered for its explosive current delivery and near-zero distortion, making this $26,995 USD listing a strong bargain. New retail for the successor DMA-500AR sits around $45,000 USD, while the DMA-500SV still commands roughly $76,000 USD ($69,900) in current European new stock, placing this used price well below the 25th percentile of the market.
This amplifier’s 750W RMS at 2 ohms and 90A peak current make it a top-tier driver for difficult speakers, delivering Spectral’s signature speed and control with minimal fatigue. At this price, the upside is immediate: you secure a rare, high-performance unit that still rivals modern flagships, without the wait or cost of new inventory. Unless the condition is questionable or line voltage is mismatched, this is a clear buying opportunity for serious enthusiasts.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Spectral Audio, an American high-end audio brand, traces its origins to 1975 when Richard Fryer founded the company in pursuit of unparalleled musical realism. Initially sparked by Fryer's collaboration with partner Damian Martin to create a reference amplifier for Sound Advice in 1976, the venture evolved into Spectral Incorporated with the launch of the landmark MS-One amplifier in 1977 or 1978. Fryer enlisted the expertise of Dr. Keith O. Johnson, a legendary recording engineer and circuit designer renowned for innovations in analog and digital audio, including early advancements in cassette duplication.
The brand focuses on premium electronics, particularly power amplifiers, preamplifiers, and digital source components like state-of-the-art DACs, designed to integrate seamlessly as a unified system. Spectral eschews mass production, building limited quantities of each product to push performance boundaries without regard for cost constraints, treating development like an independent research lab rather than a conventional business.
Spectral holds a niche boutique position in the high-end market, revered by discerning audiophiles for its timeless engineering and refusal to chase trends, reviews, or aggressive marketing. Operating almost as a well-kept secret for over four decades, it prioritizes sonic purity and system synergy, appealing to serious listeners who value substance over hype.
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