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At US$1,550, the asking price for the Threshold DAC2 power supply sits just above the median of US$1,400 derived from 18 recent comparable listings, making it a fair market offer rather than a bargain or an ambitious ask. The price falls comfortably between the 25th percentile (US$1,094) and the 75th percentile (US$2,065), indicating the seller is aligned with current used-market expectations for this specific component.
This external power supply is a worthwhile buy because the DAC2 is renowned for its discrete I/V stage and BurrBrown 1794A converters, delivering exceptional THD+N under 0.006% and SNR over 120 dB. For enthusiasts, securing the correct voltage variant (115V or 230V) is the critical step, but once matched, this unit unlocks the DAC’s full dynamic range and low-noise performance. At a fair price with no listed condition issues, this represents a solid opportunity to upgrade a system with a highly regarded vintage digital front end.
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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