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Seller's Description

Angeboten wird „Boulder 866 Digital“ von Boulder Amplifiers als Gebrauchtgerät aus der Kategorie „Transistor-Vollverstärker“ bei audio-markt.de - dem Online-Marktplatz für High-End. Das Inserat mit der Nummer 4157521449 endet am 02.09.2026 um 12:33 Uhr.

Our Thoughts RADAR AI

At €12,000, this Boulder 866 listing is ambitious compared to the typical used market in EUR, sitting well above the median of €10,798 and the 75th percentile of €11,389 from recent comparable listings. While two recent EUR listings show asking prices as low as €9,000 and €9,399, this price exceeds the upper quartile by roughly €600, suggesting the seller may be targeting original-owner condition or including extras like the digital module.

The 866 remains a highly regarded integrated amplifier, praised for its dual-mono Class A/B architecture delivering 200W into 8 ohms and exceptional current delivery into 4 ohms. Its sonic precision, low noise, and optional Roon-enabled DAC/streamer make it a rare entry into Boulder’s elite sound. If this unit is the digital-equipped version in pristine condition with original accessories, the extra cost reflects genuine value; otherwise, it’s worth waiting for a closer match to the €10,000–€10,800 range.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About Boulder

Boulder Amplifiers traces its roots to the professional recording and broadcast world of the 1970s, when founder Jeff Nelson, a self-taught electronics expert, built mixing boards for studios. In 1984, the company formally launched in Colorado—initially in an old farmhouse near Superior, later relocating to Louisville—with the debut of its rugged 500 power amplifier, prized by engineers for its clarity and durability. Under Nelson's leadership for over four decades, Boulder transitioned from pro audio gear to the pinnacle of home high-fidelity, maintaining full vertical integration in a sprawling 23,000-square-foot facility where every chassis, circuit, and component is crafted in-house.

The brand specializes in solid-state power amplifiers, preamplifiers, and integrated electronics, epitomized by flagships like the 2150 monoblock and 800 Series. Absent from speakers, turntables, DACs, headphones, or cables, Boulder's focus remains laser-sharp on amplification, delivering ultra-neutral sound with vanishingly low distortion—such as the 2150's 0.00036% THD and 1000W output—and peerless signal-to-noise ratios.

Positioned at the apex of high-end audio, Boulder commands reverence among discerning audiophiles for indestructible build quality, cost-no-object engineering, and machined-aluminum casework that sets unmatched standards. As North America's last fully in-house audio manufacturer, it appeals to buyers seeking unflappable performance and heirloom longevity, with prices reflecting its elite status, like $110,000 pairs of monoblocks.

See all Boulder listings on RADAR.

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