{"product_id":"boulder-1163-stereo-power-amplifier","title":"Boulder 1163 Stereo Power Amplifier","description":"\u003cp\u003eThe Boulder 1163 Stereo Power Amplifier brings the 1100 Series’ signature transparency and control into a more compact, installation-friendly chassis. Sharing the same footprint as the 1110 Preamplifier, it delivers 150W of continuous power per channel into 8 ohms, with peak output climbing to 200W into 8 ohms, 325W into 4 ohms, and 550W into 2 ohms—authority that belies its modest dimensions and standard power cord.\u003c\/p\u003e\u003cp\u003eAt its core, the 1163 employs Boulder’s own 985 gain stage, the identical circuit found in the larger 1162, ensuring the same resolution and signal handling. A fully balanced input-to-output architecture preserves common-mode noise rejection, while a redesigned automatic biasing circuit maintains precise calibration without manual intervention. The output stage marshals 40 transistors and 12 supply capacitors, providing stable, high-current delivery into any loudspeaker load while safeguarding detail and clarity. Newly developed protection circuitry instantly mutes the output in the event of a shorted cable or system fault, simultaneously enabling greater peak power reserves. Software updates for the internal control and housekeeping systems are available via automated online download or manual USB installation.\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=\"M16 18a2 2 0 0 1 2 2a2 2 0 0 1 2 -2a2 2 0 0 1 -2 -2a2 2 0 0 1 -2 2zm0 -12a2 2 0 0 1 2 2a2 2 0 0 1 2 -2a2 2 0 0 1 -2 -2a2 2 0 0 1 -2 2zm-7 12a6 6 0 0 1 6 -6a6 6 0 0 1 -6 -6a6 6 0 0 1 -6 6a6 6 0 0 1 6 6z\"\u003e\u003c\/path\u003e\u003c\/svg\u003eHighlights\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding-left:0;margin:0 0 1em\"\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ 150W peak power per channel into 8 ohms, 200W peak power into 4 ohms, 400W peak power into 2 ohms\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Space saving design with the same footprint (width and depth) as the 1110 Preamplifier\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Truly balanced input connections and output stage\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Protection circuitry shuts down the output section in case of shorted speaker cables or faults in the system\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Signal handling and resolution achieved using the 985 gain stage\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Automatic biasing circuit stabilizes bias to eliminate the need for manual calibration\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Output stage uses 40 output transistors and 12 supply capacitors to ensure stable, high-power output into any load while maintaining detail and clarity.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Software updates to the internal control and housekeeping systems available via online downloads or USB port installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\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\n\u003cli style=\"margin:0 0 0.35em\"\u003e\u003ca href=\"https:\/\/boulderamp.com\/wp-content\/uploads\/1163-Owners-Manual-V1-1.pdf\" target=\"_blank\" rel=\"noopener nofollow\"\u003e1163 Stereo Power Amplifier Owners Manual\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e\u003ca href=\"https:\/\/boulderamp.com\/wp-content\/uploads\/1163-Literature-Final.pdf\" target=\"_blank\" rel=\"noopener nofollow\"\u003e1163 Stereo Power Amplifier Literature\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e\u003ca href=\"https:\/\/boulderamp.com\/wp-content\/uploads\/1163-Power-Amplifier-SALES-DIMS.pdf\" target=\"_blank\" rel=\"noopener nofollow\"\u003e1163 Stereo Power Amplifier Dimensions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e\u003ca href=\"https:\/\/boulderamp.com\/wp-content\/uploads\/Smart-Current-6.26.26.pdf\" target=\"_blank\" rel=\"noopener nofollow\"\u003eClass-A Smart Current White Paper by Jeff Nelson\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Boulder Amplifiers","offers":[{"title":"Default Title","offer_id":43181649330274,"sku":null,"price":29500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/boulder-1163-stereo-power-amplifier-3.png?v=1786008542","url":"https:\/\/pearlaudio.com\/products\/boulder-1163-stereo-power-amplifier","provider":"Pearl Audio","version":"1.0","type":"link"}