{"product_id":"audio-research-ls-3-preamplifier","title":"Audio Research LS-3 Preamplifier","description":"\u003ch1\u003eAudio Research LS-3 Preamplifier\u003c\/h1\u003e\n\u003ch3\u003eFully Dual-Mono Solid-State Design With Balanced JFET Inputs, Class-A Outputs, and Touch-Screen Control\u003c\/h3\u003e\n\u003cp\u003eInspired by the original LS3 line stage introduced in 1992, the Audio Research LS-3 is a modern solid-state preamplifier built around a fully balanced differential JFET input stage, bipolar transistor voltage amplification, and class-A output stages. It brings Audio Research's current solid-state engineering to a dedicated line-stage design while retaining the company's recognizable visual identity.\u003c\/p\u003e\n\u003cp\u003eThe LS-3 uses a fully dual-mono signal path with separate power transformers for the two channels. Linear power supplies and a zero-gain cascaded voltage reference support the low-noise circuitry, while balanced and single-ended connections make the LS-3 straightforward to integrate into a wide range of systems.\u003c\/p\u003e\n\u003ch4\u003eModern Control and Display\u003c\/h4\u003e\n\u003cp\u003eAn all-new touch-screen display provides access to functions including input naming, display-intensity adjustment, and selectable display colors. Its typography draws on the appearance of Audio Research's Reference GhostMeters, giving the LS-3 a contemporary interface that remains visually connected to the company's current components.\u003c\/p\u003e\n\u003ch4\u003eAll-Aluminum Chassis\u003c\/h4\u003e\n\u003cp\u003eThe LS-3 shares its all-aluminum chassis with the tube-based LS-2. Audio Research designed the enclosure for the stability and rigidity needed to isolate the internal circuitry, combining the company's traditional proportions with a cleaner, more modern appearance.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFully balanced differential JFET input stage\u003c\/li\u003e\n\u003cli\u003eBipolar transistor-based voltage amplifier\u003c\/li\u003e\n\u003cli\u003eClass-A output stages\u003c\/li\u003e\n\u003cli\u003eFully dual-mono signal path\u003c\/li\u003e\n\u003cli\u003eSeparate power transformers for each channel\u003c\/li\u003e\n\u003cli\u003eLinear power supplies\u003c\/li\u003e\n\u003cli\u003eZero-gain cascaded voltage reference\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and single-ended RCA connectivity\u003c\/li\u003e\n\u003cli\u003eTouch-screen display with input naming, intensity adjustment, and selectable colors\u003c\/li\u003e\n\u003cli\u003eAll-aluminum chassis\u003c\/li\u003e\n\u003cli\u003eUser-installable optional DAC card with USB, coaxial, and optical inputs\u003c\/li\u003e\n\u003cli\u003eUser-installable optional MM\/MC phono card\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eFrequency Response:\u003c\/b\u003e ±0 dB, 10 Hz–40 kHz at rated output (balanced, 100k-ohm load)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTHD + Noise:\u003c\/b\u003e Less than 0.007% at 2 V RMS balanced output\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eNoise:\u003c\/b\u003e -75 dBV at maximum volume (99)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eCrosstalk:\u003c\/b\u003e -82 dB\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eGain:\u003c\/b\u003e 20 dB balanced output; 20 dB single-ended output\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eInput Impedance:\u003c\/b\u003e 25k ohms balanced and single-ended\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Impedance:\u003c\/b\u003e 10 ohms balanced; 25 ohms single-ended\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Polarity:\u003c\/b\u003e Balanced: non-inverting; single-ended: inverting\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePower Requirements:\u003c\/b\u003e 120 VAC, 60 Hz, 35 W maximum\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eStandby Power:\u003c\/b\u003e 4.2 W\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimensions (H × W × D):\u003c\/b\u003e 7\" x 19\" x 17.5\" (17.78 x 48.26 x 44.45 cm)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eShipping Weight:\u003c\/b\u003e 48 lb. (21.8 kg)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 33 lb. (15 kg)\u003c\/p\u003e\n","brand":"Audio Research","offers":[{"title":"Black \/ No Addons","offer_id":53876967768248,"sku":"ARC-LS3-BLK","price":7450.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Optional DAC Card","offer_id":53876967801016,"sku":"ARC-LS3-BLK-DAC","price":8450.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ DAC \u0026 Phono Card (Preinstalled)","offer_id":53876967833784,"sku":"ARC-LS3-BLK-DAP","price":8950.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Optional Phono Card","offer_id":53876967866552,"sku":"ARC-LS3-BLK-PHN","price":8450.0,"currency_code":"USD","in_stock":true},{"title":"Natural (Silver) \/ No Addons","offer_id":53876967899320,"sku":"ARC-LS3-NAT","price":7450.0,"currency_code":"USD","in_stock":true},{"title":"Natural (Silver) \/ Optional DAC Card","offer_id":53876967932088,"sku":"ARC-LS3-NAT-DAC","price":8450.0,"currency_code":"USD","in_stock":true},{"title":"Natural (Silver) \/ DAC \u0026 Phono Card (Preinstalled)","offer_id":53876967964856,"sku":"ARC-LS3-NAT-DAP","price":8950.0,"currency_code":"USD","in_stock":true},{"title":"Natural (Silver) \/ Optional Phono Card","offer_id":53876967997624,"sku":"ARC-LS3-NAT-PHN","price":8450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/LS3-black-front.jpg?v=1786386043","url":"https:\/\/upscaleaudio.pro\/products\/audio-research-ls-3-preamplifier","provider":"Upscale Audio","version":"1.0","type":"link"}