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This is a strong deal at US$21, well below the comparable-listing 25th percentile of US$30 and less than half the US$48 median. Even with unknown condition, the price leaves ample room for a worthwhile purchase rather than merely being fair.
The GFS-6 is a useful, well-regarded passive speaker selector: it can handle up to six speaker pairs, offers selectable impedance protection when running multiple pairs, and uses sturdy twist-lock terminals. It requires no power and is straightforward to use, making it especially handy for a multi-speaker setup or amplifier comparison. At US$21, verify that all switches operate cleanly, the terminals are intact, and the protection function engages, but there is little reason to overthink the risk if it is functional.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
ADCOM emerged in the 1970s as a family-owned American audio venture founded by audiophile Newt Channin, initially focusing on exceptionally musical moving-coil phono cartridges that set it apart from typical entrants. The brand quickly pivoted to electronics with the groundbreaking GFA-1 power amplifier in 1979, delivering 200 watts per channel and robust current for demanding speakers, propelling ADCOM into prominence during the high-fidelity boom of the 1980s and 1990s.
The company built its legacy on high-performance amplifiers, including the Nelson Pass-designed GFA-555 that garnered worldwide acclaim, alongside AV tuners, preamps, and multichannel power amps like the GFA-6000 tailored for home theater. While early roots lay in phono gear, ADCOM specialized in electronics offering superior sound quality without extravagant pricing, eschewing speakers, headphones, or extensive cabling lines.
Positioned firmly in the mid-fi realm, ADCOM defined accessible high-end audio for discerning buyers, blending value and performance that rivaled pricier competitors. After challenges and ownership shifts—including a Thai firm and a faltering 2010 relaunch—the brand staged a robust comeback in 2024 under J&B Distribution, reviving classics like the GFA-555ms alongside modern integrated amps and preamps, reclaiming its spot among savvy audiophiles seeking reliable, soul-stirring sound.
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