{"product_id":"used-boulder-2160-stereo-amplifier","title":"Used- Boulder 2160 Stereo Amplifier","description":"\u003cp\u003eThis is a used Boulder 2160 that is coming with a 5 year warranty from Boulder.  Ships in manufacturer crate.  Currently wired 240v but we can switch to 120v if the buyer prefers.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"features-row clearfix\"\u003e\n\u003cul class=\"features-list\"\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003eBias operation is Class-A to full rated output power and managed with an analog circuit that minimizes heat and power consumption\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003eBoulder's most powerful, continually produced stereo amplifier: 600W per channel\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003eSurface-mount circuit board design minimizes connection resistance and lead inductance\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"features-row clearfix\"\u003e\n\u003cul class=\"features-list\"\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003eNon-resonant chassis carved from solid blocks of aluminum on Boulder's own CNC machining centers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003eFour fully-discrete 99H2 gain stages, potted and housed in machined shells for thermal stability and shielding\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003eTwo massive transformers are filtered, potted, and enclosed in a welded steel case\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"features-row clearfix\"\u003e\n\u003cul class=\"features-list\"\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003ePower cycling, turn on sequencing, and status messages sent to Boulder preamplifier displays via the Boulder Link communication system\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003e12V trigger connection for remote turn-on and use with most surround sound processors and external control systems\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003eSupervising microprocessor circuitry controls and monitors protection systems, and the turn-on and turn-off of any linked amplifiers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"features-row clearfix\"\u003e\n\u003cul class=\"features-list\"\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003eDual stage design incorporates the majority of gain in the first stage to maximize bandwidth and minimize distortion\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003eTwo pairs of speaker connections per channel to accommodate bi-wired loudspeakers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"feature-block text-center\"\u003e\n\u003cdiv class=\"feature-block-content\"\u003e\n\u003cp\u003eFully-balanced design from the inputs to the outputs substantially reduces distortion and noise\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"specs-list-header clearfix\"\u003e\n\u003cdiv class=\"h4 spec-product-subtitle\"\u003eSTEREO AMPLIFIER\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul class=\"specs-list\"\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003ePEAK POWER, 8 OHMS\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e600W\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003ePEAK POWER, 4 OHMS\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e1200W\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003ePEAK POWER, 2 OHMS\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e2400W\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eTHD, 8 OHMS, 600W\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e20-2 kHz: 0.0008%, 20 kHz: 0.0040%\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eTHD, 4 OHMS, 600W\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e20-2 kHz: 0.0012%, 20 kHz: 0.0065%\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eTHD, 2 OHMS, 600W\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e20-2 kHz: 0.0018%, 20 kHz: 0.0100%\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eEQUIVALENT INPUT NOISE (EIN), 20 KHZ BW\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e1.5 μV\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eMAGNITUDE RESPONSE, 20 TO 20 KHZ\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e+0.00, -0.04 dB\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eMAGNITUDE RESPONSE, - 3 DB AT\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e0.015 Hz, 200 kHz\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eVOLTAGE GAIN\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e26 dB\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eINPUT IMPEDANCE\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003eBalanced: 200kΩ\u003cbr\u003eUnbalanced: 100kΩ\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eCOMMON MODE REJECTION (BALANCED ONLY)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e60 Hz: 90 dB,\u003cbr\u003e10 kHz: 70 dB\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eINPUTS\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e3-pin balanced XLR\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eOUTPUT CONNECTORS\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e2 sets of 6 mm \/ .250-inch wingscrews\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eWEIGHT\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003eAmplifier: 220 lbs. (99.8 kg)\u003cbr\u003eShipping: 319 lbs. (144.7 kg)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003ePOWER REQUIREMENTS\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003e100, 110-120, 220, 240 VAC, 50-60 Hz\u003cbr\u003e250W nominal, 5000W at maximum output\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"spec-row clearfix\"\u003e\n\u003cdiv class=\"spec-left\"\u003e\n\u003cp\u003eAMPLIFIER TOPOLOGY\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-right\"\u003e\n\u003cp\u003ePure Class A to full rated output\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Reference Analog","offers":[{"title":"Default Title","offer_id":46738781733026,"sku":null,"price":45000.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0600\/1318\/3138\/files\/productimg_2160_front-1200x785.png?v=1775653457","url":"https:\/\/www.referenceanalog.com\/products\/used-boulder-2160-stereo-amplifier","provider":"Reference Analog","version":"1.0","type":"link"}