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US$395 is ambitious for a used Adcom GTP-500 II, sitting well above the 75th percentile of US$365 and the median of US$300 in your database. At this price, you’re paying nearly 30% more than the typical market value, which makes it a weak deal unless the condition is exceptional or includes rare accessories.
That said, the GTP-500 II is a respected tuner/preamp known for clean FM reception, solid phono stage performance, and reliable operation—often paired with Adcom’s GFA power amps for a cohesive vintage system. If this listing includes the original manual, remote, and phono cable in excellent condition, it gains some upside, but even then, US$395 is hard to justify against comparable listings asking US$325 or less. Wait for a fairer price near US$300–US$330.
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.
See all ADCOM listings on RADAR.
