{"product_id":"audio-research-reference-160s-stereo-poweramplifier","title":"Audio Research Reference 160S Stereo Poweramplifier","description":"\u003ch1\u003eAudio Research Reference 160S Stereo Power Amplifier\u003c\/h1\u003e\n\u003ch3\u003e140 Wpc Ultralinear or 70 Wpc Triode Operation With Auto-Bias, Dual GhostMeters, and Eight KT150 Output Tubes\u003c\/h3\u003e\n\u003cp\u003eThe Audio Research Reference 160S brings the architecture and feature set developed for the REF160M monoblock into a single stereo chassis. Its fully balanced circuit topology uses eight KT150 output tubes and four 6H30 gain-stage tubes, delivering approximately 140 Wpc in Ultralinear mode or 70 Wpc in Triode mode.\u003c\/p\u003e\n\u003cp\u003eThe 160S gives you more than one way to integrate it into a serious system. Balanced XLR and single-ended RCA inputs accommodate a wide range of preamplifiers, while dedicated 4-, 8-, and 16-ohm output taps provide appropriate connections for different loudspeaker loads. A 12 V trigger and RS-232 interface support remote and system-control installations.\u003c\/p\u003e\n\u003ch4\u003eUltralinear or Triode at the Touch of a Button\u003c\/h4\u003e\n\u003cp\u003eA front-panel control switches the Reference 160S between Ultralinear and Triode operation. Ultralinear mode provides approximately 140 Wpc, while Triode mode provides approximately 70 Wpc, allowing the owner to choose between the two operating modes without changing tubes or making internal adjustments.\u003c\/p\u003e\n\u003ch4\u003eAutomatic Bias Control\u003c\/h4\u003e\n\u003cp\u003eAudio Research's auto-bias circuit eliminates routine manual bias adjustment. Once factory-set, the circuit continually compensates to maintain the proper bias as the KT150 output tubes age. A front-panel Tube Monitor function provides a convenient way to check the operating status of all eight output tubes.\u003c\/p\u003e\n\u003ch4\u003eDual GhostMeters\u003c\/h4\u003e\n\u003cp\u003eDual GhostMeters place the power-meter displays in front of the eight KT150 output tubes, giving the 160S the distinctive visual architecture introduced with the REF160M. Meter illumination can be adjusted through four brightness levels, including off.\u003c\/p\u003e\n\u003ch4\u003eDesigned for Real-World System Integration\u003c\/h4\u003e\n\u003cp\u003eThe Reference 160S includes selectable balanced or single-ended operation, switchable high\/low fan speed, and a defeatable auto-shutoff function that turns the amplifier off after two hours without a detected signal. Two internal fans provide forced-air cooling, while the rear panel includes 12 V trigger connections and RS-232 control for integration with automated systems.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e140 Wpc continuous output from 20 Hz–20 kHz in Ultralinear operation\u003c\/li\u003e\n\u003cli\u003eApproximately 70 Wpc in Triode operation\u003c\/li\u003e\n\u003cli\u003eEight matched KT150 output tubes and four matched 6H30 gain-stage tubes\u003c\/li\u003e\n\u003cli\u003eFully balanced circuit topology\u003c\/li\u003e\n\u003cli\u003eProprietary automatic bias circuit with continuous compensation as output tubes age\u003c\/li\u003e\n\u003cli\u003eSwitchable Ultralinear and Triode operating modes\u003c\/li\u003e\n\u003cli\u003eDual GhostMeter power meters\u003c\/li\u003e\n\u003cli\u003eOutput-tube monitoring for all eight KT150 tubes\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and single-ended RCA inputs\u003c\/li\u003e\n\u003cli\u003e4-, 8-, and 16-ohm speaker output taps\u003c\/li\u003e\n\u003cli\u003eFour-level meter illumination adjustment, including off\u003c\/li\u003e\n\u003cli\u003eSelectable high\/low fan speed\u003c\/li\u003e\n\u003cli\u003eDefeatable two-hour auto-shutoff\u003c\/li\u003e\n\u003cli\u003e12 V trigger input\/output and RS-232 control\u003c\/li\u003e\n\u003cli\u003eFour-layer circuit board\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIncluded Accessories\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEight matched KT150 output tubes\u003c\/li\u003e\n\u003cli\u003eFour matched 6H30 tubes\u003c\/li\u003e\n\u003cli\u003e20 A IEC 12-gauge AC power cord\u003c\/li\u003e\n\u003cli\u003e7\/64\" hex driver for initial tube-cage removal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003ePower Output:\u003c\/b\u003e 140 Wpc continuous from 20 Hz–20 kHz; 1 kHz total harmonic distortion typically 1% at 140 W, below 0.04% at 1 W; approximately 70 Wpc in Triode mode\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePower Bandwidth (-3 dB Points):\u003c\/b\u003e 5 Hz–70 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFrequency Response (-3 dB Points at 1 W):\u003c\/b\u003e 0.5 Hz–110 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Sensitivity:\u003c\/b\u003e 2.4 V RMS balanced for rated output; 25.5 dB gain into 8 ohms\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Impedance:\u003c\/b\u003e 300k ohms balanced; 100k ohms single-ended\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Polarity:\u003c\/b\u003e Non-inverting; balanced input pin 2+ (IEC-268)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Taps:\u003c\/b\u003e 4, 8, and 16 ohms\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Regulation:\u003c\/b\u003e Approximately 0.6 dB, 16-ohm load to open circuit; damping factor approximately 14\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOverall Negative Feedback:\u003c\/b\u003e 14 dB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSlew Rate:\u003c\/b\u003e 13 V\/microsecond\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eRise Time:\u003c\/b\u003e 2 microseconds\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePower Requirements:\u003c\/b\u003e 105–130 VAC, 60 Hz; 875 W at rated output, 700 W in Triode mode, 500 W at idle, 3.6 W off\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTubes Required:\u003c\/b\u003e Eight KT150 output tubes (four matched pairs); four 6H30 gain-stage tubes\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimensions (H × W × D):\u003c\/b\u003e 10.25\" x 19\" x 21.5\" (26 x 48.26 x 54.61 cm); 24\" (60.96 cm) deep with handles and connectors\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 100 lb. (45.4 kg)\u003c\/p\u003e\n","brand":"Audio Research","offers":[{"title":"Black","offer_id":53876968456376,"sku":"ARC-REF160S-BLK","price":28000.0,"currency_code":"USD","in_stock":true},{"title":"Natural (Silver)","offer_id":53876968489144,"sku":"ARC-REF160S-NAT","price":28000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/Ref160SanglenocoverBLK.jpg?v=1786382782","url":"https:\/\/upscaleaudio.com\/products\/audio-research-reference-160s-stereo-poweramplifier","provider":"Upscale Audio","version":"1.0","type":"link"}