Adcom GFA-7000
Little is formally documented about the Adcom GFA-7000, but the period magazine record gives a clear picture. It was a five-channel power amplifier built for the emerging home-theater market of the mid-1990s, and it carried Home THX certification. HiFI-Stereo (August 1996, p.52) ran a full test report on the THX version. A series of advertisements in that magazine and in Audio throughout 1996 and 1997 promoted it heavily.
The ads consistently described the GFA-7000 as having five separate amplifier modules, each rated at 130 watts into 8 ohms. The reasoning was simple. Each channel got its own dedicated module so that movie soundtracks, with their big dynamic swings, would not compromise any one channel. A later Audio ad (October 1997, p.52) added that the amplifier used a massive toroidal transformer and 120,000 µF of total storage capacitance, sized for low-impedance THX speaker loads. The same ad called the GFA-7000 "Home THX certified."
Beyond these fragments, the record is thin. No service manual, original price list, or production run details have surfaced in the usual channels. Reviewers did take it seriously enough to bench-test it.
- Type: Five-channel power amplifier (THX certified)
- Power: 130 W × 5 into 8 ohms (per ad claims)
- Design: Five separate amplifier modules, toroidal transformer, 120,000 µF capacitance
- Period coverage: Advertisements and test report appear 1996–1997
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