{"title":"Audio Research","description":"\u003cp\u003eFounded in Minnesota in 1970, Audio Research is one of the historic names in American high-end audio. For more than half a century, the company has led the world in vacuum-tube electronics, advancing the art of music reproduction through exceptional engineering, enduring design, and an unwavering commitment to sound quality. \u003ca href=\"https:\/\/www.audioresearch.com\" title=\"https:\/\/www.audioresearch.com\"\u003e\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"audio-research-reference-3-phono","title":"Reference Phono 3SE","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eThe Reference Phono 3SE is the next great advancement in analog playback and represents a new benchmark. The knowledge gained in the creation of Audio Research’s award-winning Reference 160-series amplifiers has transitioned to both Reference preamplifiers. The Reference Phono 3SE continues the upgrades introduced in the Reference 6SE line-stage, including a number of new, ultra-high-quality parts judiciously incorporated into its design and ushering in a new level of sonic accuracy and musicality. Due to the extremely low-level nature of the signals involved in a phono stage, the component and wiring upgrades incorporated in the Reference Phono 3SE combine to create a startling advancement in performance. The improvements heard immediately include enhanced resolution at all levels, greater purity and focus, improved transient speed and snap, and better dynamic shading. The sum of these improvements is exceptional, further breaking down the barrier between reproduced sound and the immediacy of a live event.\u003c\/p\u003e\n\u003cp\u003eThe Reference Phono 3SE phono preamplifier is housed in a single chassis with heavy, machined aluminum side panels and special acrylic top and bottom covers for the best sound. The vacuum-tube audio stage utilizes six 6H30 vacuum tubes (three per channel), while one 6H30 and a 6550WE provide regulation in the power supply. The large, vacuum fluorescent display on the front panel shows all functions relative to the selected input. A row of six buttons controls power, mute, input, and menu controls. Menu functions include auto shutdown, gain and load settings, display brightness, equalization settings (RIAA, Columbia and Decca), and accumulated tube hours. High- and low-gain settings, as well as six fixed and one custom impedance setting, can accommodate most any moving coil or moving magnet cartridge. Two single-ended inputs provide connectivity to two turntables. There are two main outputs providing both balanced and single-ended outputs. RS-232 and IR input allow for additional control options. The Reference Phono 3 includes a full-function remote control.\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":7803657256988,"sku":null,"price":24000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/products\/audio-research-ref3-phono-stage-front.jpg?v=1623501519"},{"product_id":"audio-research-ph9","title":"PH9 Phono Stage","description":"\u003cp\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003ePH9 Foundation Series Vacuum-tube Phono Stage. \u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt's sneaking up on twenty years since I (John) bought his very first high end tubed phono stage, an Audio Research PH3.  I was just getting into vinyl, and had a Rega Planar 25 with an Elys cartridge. I went from a decent midrange solid stage phono stage straight to the PH3, creating in a sense a system where I had a lot more phonostage than turntable\/cartridge.   The PH3 was an absolute revelation in what a tubed phono stage can do for a turntable setup.  My system went from having an excellent analog sound, to a magical and alive analog sound that rocketed it's performance above my much more expensive SACD digital front end.  It's because, as I found, the tubes give this inner resolution and amplify the natural sense of presence and warmth of vinyl, bringing about what many feel is the best sound source available - Tubes and Vinyl. \u003cbr\u003e\u003cbr\u003eFast forward today, and Pearl Audio is somewhat magically Portland's Audio Research Dealer, a dream come true for me really, and with that comes another dream, the PH9.  \u003cbr\u003e\u003cbr\u003eLike the PH3 before it, the PH9 is a moderate (58db) amplification phono stage and suitable for higher output ~.7mV)+MC cartridges and virtually all MM cartridges. A low output MC would need the REF Phono.  Keeping the PH9 at this median amplification level is a good design move to keep the PH9 design simpler and the costs down. Simply put, ARC chose to build a superb .7mV on up tubed phono stage for $9K instead of a pretty good one that could do .3 mV.  I'm a big fan of this approach, especially with the newer high performance MM cartridges on the market. \u003cbr\u003e\u003cbr\u003eThe PH9 amplifies the cartridge signal with three 6H30 tubes, the preamplification supertube that superceded the 12AX7's, and a 6550 based tube power supply, which gives gutsy dynamic to the sound.  The PH9 is extraordinarily organic, quiet and open sounding and also gives that signature Foundation series tube lushness. It has front panel configuration and the ability to drive long interconnects should you wish to have your turntable across the room from your pre-amplifier. \u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":7803719548956,"sku":null,"price":12500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/products\/audio-research-ph9-phono-stage-front-natural.jpg?v=1623501461"},{"product_id":"audio-research-ref160m-amplifier","title":"Reference 160M MkII Amplifier","description":"\u003cp\u003eAfter two years in development, the new Reference 160M (REF160M) Monoblock Power Amplifier is built like no other, looks like no other, and sounds like no other amplifier that you have ever heard, but it is unmistakably Audio Research. It features a refined audio topology with fewer and better components in the signal-path than in previous designs, switchable Ultralinear\/Triode operation, proprietary auto-bias, output tube monitoring and protection, an advanced power meter, and much more. This array of features has never been offered before in an Audio Research amplifier.\u003c\/p\u003e\n\u003cp\u003eThe designers at Audio Research wanted to create a new style that would complement the look of the REF6 preamp while also featuring a GhostMeter™ that allows a view of the glowing KT150 vacuum tubes. While this GhostMeter™ allows you to see the output tubes, it also incorporates an innovative dual-layer construction with distinctively etched markings that create an integrated power meter. The power meter’s output-level markings illuminate via hidden LEDs, and the illumination brightness is adjustable. The REF160M includes a sculpted cover with an integrated fan to cool the heat generated by the four (4) KT150 output tubes and two (2) 6H30 driver tubes. Solid-state power regulation was chosen to provide increased efficiency, stability, and reliability. The power supply stage uses a newly developed High Energy Capacity Transformer and a hefty bulk storage-capacity network to provide extremely high current on demand for transient peaks and intense dynamics, as well as for prodigious bass depth and authority.\u003c\/p\u003e\n\u003cp\u003ePrice is shown is for one REF160M. \u003cbr\u003e\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":30885788188770,"sku":null,"price":48000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/products\/audio-research-ref160-amplifier-3_4-dx-copy.jpg?v=1623501473"},{"product_id":"audio-research-ref160s-amplifier","title":"Reference 160S Amplifier","description":"\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003eThe Audio Research Reference 160S (REF160S) carries-over the stunning look of the 160M, with dual GhostMeters™ that float in front of the eight KT150 output power tubes. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eThe 160S continues the feature set introduced in the 160M, including a proprietary auto-bias circuit, switchable Triode or Ultralinear modes of operation, balanced and single-ended inputs, and an output tube monitoring mode. The 160S also uses a four-layer circuit board, allowing music to emanate from a jet-black background.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eWith a weight of 100 lbs. and a chassis depth of 21.5“(54.6 cm), two rear handles were added to make it easier to lift and move. Larger 120mm, low profile fans are built into the bottom cover plate horizontally to provide ventilation.\u003c\/span\u003e\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":30885789237346,"sku":null,"price":30000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/products\/audio-reseearch-ref160s-amplifier-front-no-cover-natural-full.jpg?v=1623501483"},{"product_id":"audio-research-i-55-integrated-amplifier","title":"I\/55 Integrated Amplifier","description":"\u003cp\u003eThe Audio Research I\/55 integrated amplifier advances the compact, all-tube platform of its predecessor with the control and connectivity refinements introduced in the I\/70. Its amplification circuit pairs two matched sets of 6550WE power tubes with 6922 input tubes, delivering 50 watts per channel of continuous power with the harmonic richness and dynamic agility that have long defined the brand. The addition of auto-bias circuitry keeps the output tubes operating in their optimal range throughout their service life, simplifying ownership while preserving the amplifier’s expressive bass response and transient speed.\u003c\/p\u003e\u003cp\u003eAn active tube preamplifier stage offers a wider gain range and greater headroom than the passive design found in earlier models, making it particularly effective with recordings cut at low levels for extended dynamic range. Connectivity includes three single-ended inputs, one balanced XLR input, and a built-in DAC built around an AKM Velvet Sound chip that handles high-resolution PCM via USB, optical, coaxial, and Bluetooth—each upsampled for improved transparency and tonal purity. A dedicated headphone output driven by the 6550 output tubes, stereo preamplifier outputs for subwoofer integration, and an optional phono card with adjustable MC loading and MM\/MC gain settings round out a versatile feature set housed in a chassis measuring 16.5 inches wide.\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Silver","offer_id":43181682163810,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true},{"title":"White","offer_id":43181682196578,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":43181682229346,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true},{"title":"Red","offer_id":43181682262114,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":43181682294882,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true},{"title":"Gold","offer_id":43181682327650,"sku":null,"price":6950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/Audio-research-i-55.png?v=1786033568"},{"product_id":"d-80-stereo-power-amplifier","title":"D-80 Stereo Power Amplifier","description":"\u003cp\u003eThe Audio Research D-80 is a stereo power amplifier that draws its design foundation directly from the Reference 80S, delivering a fully balanced, differential signal path anchored by a pair of KT150 output tubes per channel. Its pentode circuit topology is engineered to maximize tonal density, bass control, and the sense of spatial expansiveness captured in recordings, while internal component selection prioritizes musical resolution and dynamic authority within a more accessible form than the company’s flagship reference models.\u003c\/p\u003e\n\u003cp\u003eContinuous auto-bias circuitry monitors and adjusts output tube bias in real time, compensating for line-voltage fluctuations and tube aging to maintain consistent performance day after day. The amplifier is equipped exclusively with balanced XLR inputs and provides 4-, 8-, and 16-ohm output taps for proper loudspeaker matching. Built, tested, and individually auditioned at Audio Research’s Minnesota facility, the D-80 carries forward the legacy of the brand’s storied “D” series amplifiers with a classically restrained aesthetic and a focus on high-resolution, musically engaging power delivery.\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":43181683114082,"sku":null,"price":12950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/d-80-stereo-power-amplifier-4.jpg?v=1786011204"},{"product_id":"s-200-stereo-power-amplifier","title":"S-200 Stereo Power Amplifier","description":"\u003cp\u003eThe S-200 is Audio Research's most advanced solid-state stereo power amplifier, a pure Class A\/B design built on a true dual-mono platform. Dual toroidal transformers feed fully balanced circuits, and the choice of bipolar output transistors reflects a deliberate engineering priority: purity, transparency, and dynamic agility over the softer presentation often associated with MOSFET designs. A muscular linear power supply ensures the amplifier maintains composure and authority even as impedance demands shift.\u003c\/p\u003e\n\u003cp\u003eHoused in a beautifully machined aluminum chassis available in black or silver anodized finish, the S-200 nods to classic Audio Research design language from a sleeker, modern perspective. Custom-machined heat sinks and the absence of visible fasteners on the front and top panels contribute to a refined, understated presence. Power output meters on a solid black background provide a visual connection to the amplifier's operation, and like every Audio Research product, the S-200 is proofed by ear in the company's Minnesota facility before it leaves the factory.\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=\"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\u003cli style=\"margin:0 0 0.35em\"\u003e\u003ca href=\"https:\/\/audioresearch.com\/new_website\/wp-content\/uploads\/2026\/06\/S-200-Owners-Manual.pdf\" target=\"_blank\" rel=\"noopener nofollow\"\u003eOWNERS MANUAL\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":43181683277922,"sku":null,"price":12950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/s-200-stereo-power-amplifier-1.jpg?v=1786011265"},{"product_id":"audio-research-s-100-stereo-power-amplifier","title":"S-100 Stereo Power Amplifier","description":"\u003cp\u003eThe Audio Research S-100 is a solid-state stereo power amplifier that translates the company's decades of valve-design philosophy into a dual-mono, fully balanced Class A\/B platform. Its bipolar output stage was chosen for its inherent transparency and dynamic agility, allowing the amplifier to deliver 100 watts per channel into 8 ohms and to double that output into 4-ohm loads, a hallmark of a robust power supply anchored by dual toroidal transformers.\u003c\/p\u003e\u003cp\u003eHoused in a machined aluminum chassis with custom heat sinks and a fastener-free front panel, the S-100 presents a sleeker, more contemporary interpretation of the classic Audio Research aesthetic. Every unit is assembled and proofed by ear at the company's Minnesota facility, ensuring the measured performance and low noise floor serve a fundamentally musical result.\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Black","offer_id":43181683343458,"sku":null,"price":9450.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":43181683376226,"sku":null,"price":9450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/audio-research-s-100-stereo-power-amplifier-1.jpg?v=1786011268"},{"product_id":"ls-2-preamplifier","title":"LS-2 Preamplifier","description":"\u003cp\u003eInspired by the original LS2 line stage that earned worldwide acclaim in 1992, the Audio Research LS-2 is a pure tube, zero-feedback, Class-A preamplifier built around a pair of 6H30 dual-triodes. It delivers a sense of scale, spatial precision, and harmonic richness that redefines expectations at its price, reproducing the size and atmosphere of a recording venue with pinpoint imaging and natural resolution of detail.\u003c\/p\u003e\n\u003cp\u003eThe chassis presents a clean, modern silhouette that is unmistakably Audio Research, while a new touch-screen display allows input naming, intensity adjustment, and color selection, carrying forward the font style of the Reference GhostMeters® for a cohesive look. With its combination of dynamic swing, timbral finesse, and quiet authority, the LS-2 offers a musically engaging foundation for a wide range of high-performance systems.\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=\"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\u003cli style=\"margin:0 0 0.35em\"\u003e\u003ca href=\"https:\/\/audioresearch.com\/new_website\/wp-content\/uploads\/2026\/06\/LS-2-Owners-Manual.pdf\" target=\"_blank\" rel=\"noopener nofollow\"\u003eOWNERS MANUAL\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":43181683769442,"sku":null,"price":8450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/ls-2-preamplifier-2.jpg?v=1786011280"},{"product_id":"audio-research-i-70-integrated-amplifier","title":"I\/70 Integrated Amplifier","description":"\u003cp\u003eThe Audio Research I\/70 integrated amplifier distills the performance of the company’s acclaimed separates into a single, elegantly proportioned chassis. Its visual design borrows directly from the Reference 330M monoblock, with anodized top and bottom plinths, a fully enclosed transformer array, and machined aluminum mesh that signals serious engineering intent. Inside, the same output transformer found in the Reference 75 amplifier works alongside four KT120 output tubes to deliver 70 watts per channel, imbuing the presentation with dynamic swing, control, and resolution that feel unexpected at this price point. Auto-bias circuitry maintains optimal tube performance without user intervention, while a 75-step volume control and a wide range of gain settings accommodate recordings cut at low levels for broad dynamic range.\u003c\/p\u003e\u003cp\u003eConnectivity is comprehensive, with three single-ended inputs, one balanced XLR input, and an optional phono card offering adjustable MC loading and MM gain. The built-in DAC, centered on an AKM Velvet Sound chip, handles high-resolution formats via USB, optical, coaxial, and Bluetooth—all upsampled for fine resolution and tonal purity. A dedicated headphone output driven by the KT120 output tubes provides a direct, high-quality personal listening path, and the independent preamplifier section includes stereo outputs ideal for feeding powered subwoofers. Hand-built in Audio Research’s Minnesota facility and individually auditioned, the I\/70 brings the authority and musical engagement of the company’s larger separates into a compact, versatile integrated form.\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":43181684129890,"sku":null,"price":9950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/audio-research-i-70-integrated-amplifier-1.jpg?v=1786011359"},{"product_id":"audio-research-ls-3-preamplifier","title":"LS-3 Preamplifier","description":"\u003cp\u003eThe Audio Research LS-3 is a solid-state line preamplifier that draws its inspiration from the award-winning LS3 of 1992, reimagined with contemporary circuit topology. A fully balanced differential JFET input stage feeds a bipolar voltage amplifier and Class-A output stages, executed in a dual-mono layout with separate power transformers and zero-gain cascaded voltage references. The linear power supplies are engineered to deliver low noise and the dynamic headroom that complex musical passages demand.\u003c\/p\u003e\n\u003cp\u003eHoused in an all-aluminum chassis that provides the rigidity needed to isolate the signal path, the LS-3 includes a new touchscreen display that carries forward the font style of Audio Research’s Reference GhostMeters®. The interface allows input naming, display intensity and color selection, and other setup functions. Sonically, the circuit renders sources with a rich tonal balance, speed, and a sense of energy that propels the music forward while preserving air, space, and focus within the recording.\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\n\u003ctbody\u003e\n\u003ctr\u003e\n\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;\"\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:\/\/audioresearch.com\/new_website\/wp-content\/uploads\/2026\/06\/LS-3-Owners-Manual.pdf\" rel=\"noopener nofollow\" target=\"_blank\"\u003eOWNERS MANUAL\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":43181694713954,"sku":null,"price":8950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/audio-research-ls-3-preamplifier-1.jpg?v=1786011834"},{"product_id":"reference-80s-stereo-power-amplifier","title":"Reference 80S Stereo Power Amplifier","description":"\u003cp\u003eAudio Research’s Reference 80S distills the company’s latest fully balanced differential circuit topology into a compact stereo chassis, delivering 70 watts per channel from a quartet of KT150 output tubes. The design shares its dimensions and feature set with the 160M monoblocks, yet lowers the barrier to Reference-level performance for listeners who value the textural richness and dynamic ease of push-pull tube amplification without the complexity of a larger system.\u003c\/p\u003e\u003cp\u003eA proprietary auto-bias circuit continuously adjusts for tube age and powerline fluctuations, while switchable Triode\/Pentode operation lets you tailor the amplifier’s character to your loudspeakers and room. Balanced and single-ended inputs, 4-8-16 ohm output taps, and a 12V trigger make integration straightforward, and the built-in hour meter and output-tube monitoring turn routine maintenance into a glance. The four-layer circuit board, separate ground plane, and low negative feedback contribute to a noise floor that Audio Research likens to a country sky free of light pollution—allowing the finest recorded details, harmonic structure, and spatial cues to emerge with uncommon clarity.\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=\"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\u003cli style=\"margin:0 0 0.35em\"\u003e\u003ca href=\"https:\/\/audioresearch.com\/new_website\/wp-content\/uploads\/2026\/06\/Ref80S_Manual.pdf\" target=\"_blank\" rel=\"noopener nofollow\"\u003eOWNERS MANUAL\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":43181717815394,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/reference-80s-stereo-power-amplifier-6.jpg?v=1786013513"},{"product_id":"reference-330m-monoblock-power-amplifier","title":"Reference 330M Monoblock Power Amplifier","description":"\u003cp\u003eAudio Research’s Reference 330M monoblock represents the pinnacle of the company’s five decades of amplifier design, delivering 330 watts of tube power with an authority that commands the most demanding loudspeakers. Its fully balanced, all-tube signal path—from the ECC83 input stage through KT170 output tubes—achieves a rare combination of high-power ease and the delicate resolution more commonly associated with low-wattage designs. The result is a presentation of tonal density, spatial specificity, and dynamic life that retrieves every thread of a recorded performance.\u003c\/p\u003e\n\u003cp\u003eEngineered for daily reliability, the 330M includes auto-bias circuitry that maintains consistent performance without user intervention, while a tube hour meter, fan speed control, and defeatable auto-off provide practical oversight. Both balanced XLR and single-ended inputs ensure broad compatibility with upstream electronics, and 12V triggers plus RS-232 control simplify integration into advanced systems. Weighing 101 lbs, the amplifier’s substantial power supply and tube regulation contribute to its vice-like grip on loudspeakers, extending control down through the lowest octaves with a composure that serves the music first.\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✓ The 330M is designed to provide performance consistency.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Auto bias assures rock-steady consistency.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Output tube life is 3,000 hours.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ A fully-balanced design, the addition of single-ended inputs allows compatibility with virtually any source.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ 12 volt triggers allow the 330M to be turned on remotely.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ RS232 control.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Auto-off control turns the 330M off if no signal is sensed in two hours (defeatable).\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Fan speed control.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Tube hour meter.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ 4-8 ohm speaker outputs.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Tube monitor.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Meter light control allows dimming or off.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 0.35em\"\u003e✓ Meter action switch allows the meter needle to be turned off.\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\u003cli style=\"margin:0 0 0.35em\"\u003e\u003ca href=\"https:\/\/audioresearch.com\/new_website\/wp-content\/uploads\/2026\/06\/Ref-330M-Owners-Manual.pdf\" target=\"_blank\" rel=\"noopener nofollow\"\u003eOWNERS MANUAL\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/td\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":43181729218658,"sku":null,"price":50000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/arc-330m-600px.png?v=1786027207"},{"product_id":"reference-20-line-stage-preamplifier","title":"Reference 20 Preamplifier","description":"\u003cp\u003eThe Reference 20 represents a fundamental rethinking of the line-stage preamplifier, developed without constraint to advance beyond the established limits of the category. Every mechanical, electrical, and material element has been reconsidered in pursuit of absolute sonic transparency, establishing a new benchmark consistent with Audio Research's tradition of defining references.\u003c\/p\u003e\u003cp\u003eAn entirely new multi-metal, layered chassis platform disperses and controls resonant energy, while critical circuits are mounted on custom suspended, mass-loaded boards to isolate the signal path from mechanical influence. The comprehensively redesigned power supply employs advanced regulation and next-generation film capacitors to reduce noise on the regulated rails by an order of magnitude, allowing the preamplifier to resolve the finest musical nuances while maintaining composure during dynamic extremes. The result is a presentation of unprecedented dimensionality, tonal integrity, timing coherence, and dynamic expression—effortless, unforced, and profoundly transparent.\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":43181745012834,"sku":null,"price":48000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/audio-research-reference-20.png?v=1786033340"},{"product_id":"reference-7-line-stage-preamplifier","title":"Reference 7 Preamplifier","description":"\u003cp\u003eDerived from the same ground-up development platform that produced the flagship Reference 20, the Audio Research Reference 7 line-stage preamplifier brings the essential advances of that design into a focused, purist expression. Rather than adapting an existing model, it establishes a new performance benchmark built around a multi-metal layered chassis that manages resonance through controlled energy distribution and custom suspended, mass-loaded circuit boards that protect signal-path integrity.\u003c\/p\u003e\u003cp\u003eThe power supply transitions to solid-state regulation for an exceptionally low noise floor and enhanced long-term stability, while reference-grade output coupling capacitors preserve signal purity throughout. The result is a level of clarity, spatial resolution, and sheer presence that advances beyond the prior flagship—delivering extraordinary detail retrieval without sacrificing the supple, textured musical character that makes extended listening both revealing and effortless.\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":43181746552930,"sku":null,"price":28000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/files\/audio-research-reference-7.png?v=1786033062"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2475\/2780\/collections\/Screenshot_2026-08-06_at_6.53.36_AM.png?v=1786024454","url":"https:\/\/pearlaudio.com\/collections\/audio-research.oembed?page=2","provider":"Pearl Audio","version":"1.0","type":"link"}