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Seller's Description

Angeboten wird „865 Vollverstärker“ 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 4319517563 endet am 03.09.2026 um 06:38 Uhr.

Our Thoughts RADAR AI

At €6,800 this Boulder 865 is a strong bargain, sitting well below the typical used market where listings range from roughly €4,700 (£4,000) to €13,300 (£11,300 new) and its original 2008 price was about €9,200 ($11,500). Even accounting for the single UK listing at €4,700 with a minor cosmetic flaw, your €6,800 ask for “good” condition with remote positions this as excellent value, likely under the 25th percentile of fair used pricing in EUR.

The 865 is revered for its massive 150Wpc solid-state power, dual-mono balanced architecture, and ultra-low distortion (0.0035% THD), delivering the clean, dynamic punch that defines Boulder’s entry-level 800 series. With original packaging, remote, manual, and even a purchase invoice reportedly included (as seen in a comparable Polish listing), this unit offers rare completeness and timing upside as Boulder’s newer 866 model now exceeds €11,000 used. No major caveats apply at this price; it’s a genuine buying opportunity for a well-loved, high-performance integrated.

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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