Vintage Adcom GFP - 555 II Preamplifier
- Location
- US
- Seller
- director_91
- Source
- eBay US
- Posted
- 26 May 2026
- Last seen
- 3d ago
RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
Fair ask: at US$330, it lands a bit above the US$285 median and just over the US$327 75th percentile from your recent comps, so this is not a bargain, but it’s still close enough to market that I’d call it reasonable rather than overpriced. It only feels mildly ambitious, not a stretch.
What makes it worth considering is that this is a respected, straightforward preamp: the GFP-555 is known for clean, controlled line-stage performance, solid build quality, and a presentation that tends to stay musical without getting fussy. If the unit is truly clean, functions properly, and includes the remote and original packaging, the extra dollars can make sense for a buyer who wants a dependable keeper rather than a project.
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.