{"product_id":"adcom-gfa-555-stereo-power-amplifier-made-in-usa-1988-1993","title":"Adcom GFA-555 Stereo Power Amplifier Made in USA (1988-1993)","description":"\u003cp\u003eExperience legendary high-power vintage audio with the Adcom GFA-555, a classic stereo power amplifier featuring a circuit design by renowned audio engineer Nelson Pass. Delivering an impressive 200 watts per channel into 8 ohms and 325 watts per channel into 4 ohms, this amplifier provides excellent speaker control, powerful bass, and detailed sound reproduction. Its high-current design, heavy-duty construction, and bridgeable mono operation make it an outstanding choice for serious stereo enthusiasts. Fully tested, refurbished, and SPENCERTIFIED for reliable everyday listening.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cb\u003eCONDITION\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eSPENCERTIFIED\u003c\/b\u003e\u003cspan style=\"font-weight: 400;\"\u003e- Fully certified by Spencer\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eRefurbished and \u003c\/span\u003e\u003cb\u003eSPENCERTIFIED\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e100% tested and functional. Standard refurbishment includes cleaning electrical switches and connections with WD-40 Specialist Electrical Contact Cleaner. Internal boards and connections are inspected, amplifier outputs tested, DC offset checked, and both stereo channels verified for proper operation.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eCosmetic Condition: 9\/10.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 400;\"\u003eFunctional Condition: 10\/10.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cb\u003e\u003ci\u003eWHAT'S IN THE BOX?\u003c\/i\u003e\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: 400;\" aria-level=\"1\"\u003eAdcom GFA-555 Stereo Power Amplifier\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cb\u003e\u003ci\u003eOther information about the Adcom GFA555\u003c\/i\u003e\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-Current Stereo Power Amplifier\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e200 Watts Per Channel into 8 Ohms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e325 Watts Per Channel into 4 Ohms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e600 Watts Bridged Mono into 8 Ohms\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eClassic Nelson Pass Circuit Design\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eClass AB Amplifier Design\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh-Current Output Capability\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e700VA High-Capacity Power Transformer\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e60,000µF Total Filter Capacitance\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e16 High-Current Output Transistors\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDirect-Coupled Amplifier Circuitry\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWide Frequency Response\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow-Distortion Audio Reproduction\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eExcellent Damping Factor for Speaker Control\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eStereo\/Bridged Mono Selector Switch\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInstantaneous Distortion Alert Indicators\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFront-Panel Power Indicator\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeavy-Duty Aluminum Front Panel\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLarge External Heat Sinks for Cooling\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThermal Protection Circuitry\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInternal and External Fuse Protection\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eClassic Black Finish\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible with a Wide Range of Passive Loudspeakers\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDesigned for Use with an External Preamplifier or Receiver with Preamp Outputs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cb\u003e\u003ci\u003eDIMENSIONS\u003c\/i\u003e\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: 400;\" aria-level=\"1\"\u003e\u003cspan style=\"font-weight: 400;\"\u003e17\" x 12.2\" x 7.3\" (Length x Width x Height)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: 400;\" aria-level=\"1\"\u003e\u003cspan style=\"font-weight: 400;\"\u003eWeight: 35 lbs\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cb\u003e\u003ci\u003eINPUTS\u003c\/i\u003e\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: 400;\" aria-level=\"1\"\u003eStereo Input L\/R x1 (back)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cb\u003e\u003ci\u003eOUTPUTS\u003c\/i\u003e\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: 400;\" aria-level=\"1\"\u003eStereo Speakers [Banana Plugs] L\/R x1 (back)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cb\u003e\u003ci\u003eMANUFACTURER\u003c\/i\u003e\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: 400;\" aria-level=\"1\"\u003eMade in USA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SpenCertified","offers":[{"title":"Default Title","offer_id":67808355778804,"sku":"B18A","price":999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1683\/2705\/files\/Adcom-GFA-555-Stereo-Power-Amplifier-Made-in-USA-1988-1993-Power-Amplifiers.jpg?v=1792184677","url":"https:\/\/spencertified.com\/products\/adcom-gfa-555-stereo-power-amplifier-made-in-usa-1988-1993","provider":"SpenCertified","version":"1.0","type":"link"}