{"product_id":"audio-research-ls28se-line-stage-preamplifier","title":"Audio Research LS28SE Line-Stage Preamplifier","description":"\u003cp\u003eThe LS28SE draws on Audio Research's experience creating the Reference 160-series power amplifiers, with numerous costly component upgrades that elevate clarity, resolution, transient snap and sense of space. Four 6H30P dual-triode tubes form the line stage, and connectivity is generous, with four balanced and four single-ended inputs plus two sets of both balanced and single-ended outputs. Input naming, tube-hour metering, auto shutdown and home-theater passthrough are all directed through the menu, with phase invert and mono as standard functions.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding-right:1.5em\"\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e19 in W x 6.5 in H x 13.7 in D, 16 lbs net\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding-right:1.5em\"\u003eDynamic range\u003c\/th\u003e\n\u003ctd\u003e122dB (AES17)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding-right:1.5em\"\u003eFrequency response\u003c\/th\u003e\n\u003ctd\u003e0.4Hz to 200kHz (+0\/-3dB, balanced, at rated output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding-right:1.5em\"\u003eGain\u003c\/th\u003e\n\u003ctd\u003e18.5dB balanced, 12.5dB single-ended (main output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding-right:1.5em\"\u003eInputs\u003c\/th\u003e\n\u003ctd\u003e8 total - 4 balanced XLR, 4 single-ended RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding-right:1.5em\"\u003eTube complement\u003c\/th\u003e\n\u003ctd\u003eFour 6H30P dual triodes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding-right:1.5em\"\u003eVolume control\u003c\/th\u003e\n\u003ctd\u003e103-step rotary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eCall or visit the showroom about availability.\u003c\/strong\u003e Contact our team for pricing, a demonstration, or system design — \u003ca href=\"\/pages\/contact\"\u003eget in touch\u003c\/a\u003e.\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":50417942986945,"sku":null,"price":12000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0869\/8340\/9857\/files\/LS28SE-6_79ef6f95-09a2-493a-8cd2-60f28199236f.jpg?v=1785024451","url":"https:\/\/soundsanctuaryaustin.com\/products\/audio-research-ls28se-line-stage-preamplifier","provider":"Sound Sanctuary Austin","version":"1.0","type":"link"}