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Threshold 400A slutsteg Mycket bra skick Class A 100 w Du som är intresserad ring mig på 07333311592 Mvh Mikael Hallengren
This Threshold 400A is a legendary late-1970s solid-state amp famous for its pure Class A output and 100 watts per channel, a design that forever established Nelson Pass’s reputation. At kr SEK 9,900, this listing is a strong deal, landing well below the 25th percentile of kr SEK 10,563 and significantly under the median of kr SEK 11,227 from recent comparable SEK listings.
The 400A remains well-regarded for its musicality and robust build, delivering clean power without the grit of cheaper Class AB designs. This price point makes it an excellent buying opportunity for enthusiasts seeking authentic vintage high-end performance, especially since it sits in a range where you rarely find a working unit. With no condition flags or missing accessories noted in the listing, the low asking price suggests a genuine bargain rather than a risky sale, offering immediate upside for a clean, tested amp.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Threshold Audio emerged in Sacramento, California, in 1974, founded by renowned audio engineer Nelson Pass alongside graphic designer René Besne and Joe Sammut. Pass, a pioneer in amplifier design, launched the brand with the groundbreaking Threshold 800A power amplifier in 1975, introducing a novel sliding bias system that boosted Class A efficiency while employing 48 output transistors in a sophisticated triple-series/triple-parallel configuration. This California-rooted heritage defined Threshold as an innovator during its original run, which spanned until the mid-1990s, after which the intellectual property changed hands, including a 1994 acquisition by investor Randy Patton, who integrated it with PS Audio and relocated operations to Camarillo.
The brand focused squarely on high-end amplification, producing iconic power amplifiers like the 400A and 800A, the Stasis series renowned for their balanced Class A performance, and preamplifiers such as the NS10, SL10, and FET range including the FET-1, FET-2, FET-9, and FET-10. Later designs, like the T-200 by engineer Michael Bladelius, continued this legacy. Threshold eschewed speakers, turntables, DACs, headphones, or cables, concentrating instead on pure analog amplification that prioritized sonic purity and robustness.
Threshold holds a revered position as a vintage high-end icon, cherished by collectors and audiophiles for its enduring sound quality and Pass's technical wizardry. Once a market leader in premium solid-state gear from 1975 to 1992, it remains a sought-after name in the used market, embodying boutique excellence rather than mass production, with modern revivals under Threshold Audio sustaining its elite reputation.
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