The Adcom GFA-5802 is a high-power stereo amplifier that appears to have been introduced around 1997, going by magazine ads that ran through 1998. The record on this model is thin. No service manual or full review has turned up in the Archive's research, but Adcom's period advertisements give the core specs and positioning.

Adcom's own ads claimed 300 watts per channel into 8 ohms and 450 watts per channel into 4 ohms. They also said the amplifier could drive "virtually any speaker system regardless of its impedance." The front end used single-ended Class A circuitry, and all devices were precision matched. The circuit boards were glass epoxy. Inputs were both gold-plated RCA jacks and balanced XLR connectors. The binding posts took stripped or tinned wire, single or dual banana plugs, and spade lugs. Audio (April 1998, p.11) carried the ad that described the GFA-5802 as combining "innovative circuit design" with "the highest quality electronic parts," and pitched it as strong value against more expensive competitors.

The Archive's holdings don't document production years, original price, weight or dimensions. The GFA-5802 also doesn't show up in the research files for other Adcom models (GFA-545, GFA-555II, GFA-565, etc.), so its place in the lineup and its production run remain unconfirmed. All that exists is a handful of advertisements and the basic specifications they printed.

**Known specs (from period ads):**

- Power: 300 W/ch into 8 Ω, 450 W/ch into 4 Ω

- Front-end circuitry: single-ended Class A

- Inputs: gold-plated RCA and XLR balanced

- Speaker connections: binding posts accepting wire, banana plugs, or spade lugs

eBay Listings

ADCOM GFA-5802 Stereo Power Amplifier 300W per, Class AB XLR

$1,095

As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.

Related Models

• Adcom GFA-2535
• Adcom GFA-535
• Adcom GFA-545
• Adcom GFA-565 (1989 – c. 1992)
• Adcom GFA-585 (1990–1997)
• McIntosh MC1.25KW Power Amplifier (2001)
• McIntosh MC2KW Ultimate Flagship Amplifier (Unknown)
• Accuphase P 370
• Accuphase p300 (1973)
• Accuphase PE-2217