{"product_id":"reference-80s-stereo-power-amplifier","title":"Reference 80S Stereo Power Amplifier","description":"\u003cp\u003eAudio Research’s Reference 80S distills the company’s latest fully balanced differential circuit topology into a compact stereo chassis, delivering 70 watts per channel from a quartet of KT150 output tubes. The design shares its dimensions and feature set with the 160M monoblocks, yet lowers the barrier to Reference-level performance for listeners who value the textural richness and dynamic ease of push-pull tube amplification without the complexity of a larger system.\u003c\/p\u003e\u003cp\u003eA proprietary auto-bias circuit continuously adjusts for tube age and powerline fluctuations, while switchable Triode\/Pentode operation lets you tailor the amplifier’s character to your loudspeakers and room. Balanced and single-ended inputs, 4-8-16 ohm output taps, and a 12V trigger make integration straightforward, and the built-in hour meter and output-tube monitoring turn routine maintenance into a glance. The four-layer circuit board, separate ground plane, and low negative feedback contribute to a noise floor that Audio Research likens to a country sky free of light pollution—allowing the finest recorded details, harmonic structure, and spatial cues to emerge with uncommon clarity.\u003c\/p\u003e\n\u003ctable class=\"pu-table\" style=\"width:100%;border-collapse:separate;border-spacing:0;border:0;box-shadow:none;outline:none;background:none;table-layout:fixed;margin:0\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd style=\"border:0;padding:0\"\u003e\n\u003ch3 style=\"margin:1.25em 0 0.5em\"\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\" width=\"18\" height=\"18\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.75\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"display:inline-block;width:1.1em;height:1.1em;vertical-align:-0.18em;margin-right:0.45em\" aria-hidden=\"true\"\u003e\u003cpath d=\"M4 17v2a2 2 0 0 0 2 2h12a2 2 0 0 0 2 -2v-2\"\u003e\u003c\/path\u003e\u003cpath d=\"M7 11l5 5l5 -5\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 4l0 12\"\u003e\u003c\/path\u003e\u003c\/svg\u003eDownloads\u003c\/h3\u003e\n\u003cul\u003e\u003cli style=\"margin:0 0 0.35em\"\u003e\u003ca href=\"https:\/\/audioresearch.com\/new_website\/wp-content\/uploads\/2026\/06\/Ref80S_Manual.pdf\" target=\"_blank\" rel=\"noopener nofollow\"\u003eOWNERS MANUAL\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":43181717815394,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/reference-80s-stereo-power-amplifier-6.jpg?v=1786013513","url":"https:\/\/pearlaudio.com\/products\/reference-80s-stereo-power-amplifier","provider":"Pearl Audio","version":"1.0","type":"link"}