{"product_id":"unison-research-reference-pre-stereo-tube-preamplifier","title":"Unison Research Reference Pre Stereo Tube Preamplifier","description":"\u003cp\u003eDesigned to pair perfectly with \u003ca title=\"Unison Research Reference Monoblock Amplifiers Page\" href=\"\/collections\/unison-research\/products\/unison-research-reference-monoblock-amplifiers-pair\"\u003eUnison Research’s flagship Reference monoblocks\u003c\/a\u003e, the Reference Pre delivers exactly what its name promises: a no-compromise stereo preamplifier with obsessive Italian craftsmanship, hand-selected vacuum tubes, and a dual-chassis, dual-mono architecture that puts signal integrity first. This is a statement piece meant to anchor an elite system for the long haul, built to Unison’s highest standards and refined through decades of experience.\u003c\/p\u003e\n\u003ch5\u003eKey Features\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Chassis Design:\u003c\/strong\u003e Separate power supply and audio sections to eliminate interference and preserve microdetail\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue Dual Mono Topology:\u003c\/strong\u003e Fully independent left and right channels deliver superior channel separation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Complement:\u003c\/strong\u003e 2 x 300B, 2 x ECC82, 4 x ECC83, 6 x 6C45P for line and phono stages\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass A Operation:\u003c\/strong\u003e Delivers high linearity and unmatched tonal purity at every volume level\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced and Unbalanced Options:\u003c\/strong\u003e 2 balanced XLR inputs, 4 RCA line-level inputs, plus tape and sub outs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable Phono Stage:\u003c\/strong\u003e Two independent MM\/MC phono inputs with selectable impedance and gain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassive RIAA Equalization:\u003c\/strong\u003e ±0.2dB accuracy ensures faithful reproduction of analog sources\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower-On Link:\u003c\/strong\u003e Automatically powers on Unison Research Reference monoblocks via rear connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eEngineering and Build\u003c\/h5\u003e\n\u003cp\u003eThe Reference Pre is crafted in Italy with extreme attention to mechanical and electrical detail. Every wood element is made of solid timber, lacquered by hand using only natural oils. This isn’t just for aesthetics. The wood panels help dampen resonance and minimize chassis vibration, improving sound quality.\u003c\/p\u003e\n\u003cp\u003eInside, the layout is fully dual mono, ensuring independent signal paths for left and right channels. The phono board itself is suspended on a spring isolation system, minimizing microphonic interference. Output options include both XLR and RCA, and users can manually switch via internal jumpers depending on their preferred cabling.\u003c\/p\u003e\n\u003cp\u003eEvery internal component was chosen for its sonic performance, not its cost. This includes oversized power transformers, premium resistors, and high-tolerance capacitors throughout. The volume control is motorized and controllable by the included radio-frequency remote, ensuring clean power delivery with tactile usability.\u003c\/p\u003e\n\u003ch5\u003eAnalog Versatility\u003c\/h5\u003e\n\u003cp\u003eWhether you're running multiple line-level sources or dual turntables, the Reference Pre accommodates complex setups with grace:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTwo dedicated phono inputs, each with its own gain and load options\u003c\/li\u003e\n\u003cli\u003eAnti-rumble filter toggle for analog playback\u003c\/li\u003e\n\u003cli\u003eSwitchable monitor\/tape loop functionality\u003c\/li\u003e\n\u003cli\u003eSeparate subwoofer output with its own active path\u003c\/li\u003e\n\u003cli\u003eManual mute and volume controls on the front panel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSetup is straightforward, but final performance is anything but simple. When fully warmed up, the Reference Pre delivers deeply immersive, holographic sound with an organic midrange, lifelike dynamics, and exceptional bandwidth from top to bottom.\u003c\/p\u003e\n\u003ch5\u003eThe Listening Room Difference\u003c\/h5\u003e\n\u003cp\u003eThe Unison Research Reference Pre isn’t the kind of product that gets left on your porch. At this level, white-glove matters. That’s why \u003cstrong\u003eMichael Hoatson, owner of The Listening Room\u003c\/strong\u003e, personally hand-delivers and installs this unit nationwide \u003cstrong\u003efor free with purchase\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eMike works closely with every customer to ensure proper system integration, voltage matching, gain staging, and phono configuration. No shipping company will handle this preamp with the care and technical precision he brings to your door.\u003c\/p\u003e\n\u003cp\u003eWe’re a \u003cstrong\u003ethird-generation, family-owned high-end audio store\u003c\/strong\u003e based in Chestertown, Maryland. You’ll speak directly with us: no chatbots, no middlemen, no call centers. Just expert advice, unmatched service, and a shared passion for sonic perfection.\u003c\/p\u003e\n\u003cp\u003eHave questions about pairing this with the right monoblocks, cartridges, or cabling? Call or email us anytime. We’re here for your entire hi-fi journey.\u003c\/p\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eValve preamplifier, dual mono, two chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTubes:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 x 300B, 2 x ECC82, 4 x ECC83, 6 x 6C45P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhono Tubes:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 x 6C45P, 2 x ECC83\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperation:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePure Class A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInputs:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 x RCA, 2 x XLR, 1 x Tape, 2 x Phono\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutputs:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 x RCA, 1 x XLR, 1 x Tape (active), 1 x Subwoofer (active)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Link:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower-on link for Reference power amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e47k Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhono Input Impedance:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelectable resistance and capacitance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGain (Preamp):\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eGain (Phono):\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45–55 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRIAA Equalization:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePassive ±0.2 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBandwidth:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 Hz –\u0026gt; 100 kHz @ –0.3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNegative Feedback:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15 dB line, 0 dB phono\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDistortion:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e320 W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e45 cm x 56 cm x H 22 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Weight:\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30 kg \/ 66 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Unison Research","offers":[{"title":"Default Title","offer_id":67848764391793,"sku":"URREFPRE","price":15249.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0923\/5215\/1921\/files\/UnisonResearchReferencePreStereoTubePreamplifierFrontView_528e31e7-c3d0-4246-a772-a52b8f6250ab.jpg?v=1792519302","url":"https:\/\/sliyden.store\/products\/unison-research-reference-pre-stereo-tube-preamplifier","provider":"sliyden.store","version":"1.0","type":"link"}