{"product_id":"primaluna-evo-400-tube-preamplifier","title":"PrimaLuna EVO 400 Tube Preamplifier","description":"\u003cdetails style=\"border:1px solid #ddd;border-radius:8px;padding:6px 12px;margin:0 0 14px\"\u003e\u003csummary style=\"cursor:pointer;font-weight:700\"\u003eSpecs\u003c\/summary\u003e\u003cdiv style=\"margin-top:8px\"\u003e\u003ctable style=\"border-collapse:collapse;width:100%\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003eVacuum tube preamplifier, dual mono, tube rectified, balanced and single ended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003eTubes\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003e6x 12AU7, 2x 5AR4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003e3x stereo RCA, 2x stereo XLR, stereo RCA home theater bypass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003eOutputs\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003eStereo RCA, stereo XLR, stereo RCA tape out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003eWiring\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003ePoint to point with premium Swiss wire, AC Offset Killer, Takman resistors, ALPS Blue Velvet potentiometer, dual potted toroidal power transformers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003eControl\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003eFull remote control, home theater bypass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003eGain\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003e9.7 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003eOutput Impedance\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003e256 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003ePhono\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003eOptional moving magnet phonostage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003eFinishes\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003eSilver, Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003e52.8 lbs each\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 14px 6px 0;font-weight:600;vertical-align:top;white-space:nowrap\"\u003eDimensions (W x H x D)\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003e15.2 in x 8.1 in x 15.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #ddd;border-radius:8px;padding:6px 12px;margin:0 0 14px\"\u003e\u003csummary style=\"cursor:pointer;font-weight:700\"\u003eWarranty\u003c\/summary\u003e\u003cdiv style=\"margin-top:8px\"\u003e\u003cp style=\"margin:0\"\u003eIn the USA, the PrimaLuna EVO 400 Tube Preamplifier carries a 90 day parts and labor warranty that extends to three years when you register the unit. The vacuum tubes are guaranteed for six months. Coverage applies to the original purchaser who buys from an authorized dealer such as All Elite Audio. Contact us and we will help you register your unit and answer any service questions.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails style=\"border:1px solid #ddd;border-radius:8px;padding:6px 12px;margin:0 0 14px\"\u003e\u003csummary style=\"cursor:pointer;font-weight:700\"\u003eWhat's in the Box\u003c\/summary\u003e\u003cdiv style=\"margin-top:8px\"\u003e\u003cul style=\"margin:0;padding-left:20px\"\u003e\n\u003cli\u003ePrimaLuna EVO 400 Tube Preamplifier\u003c\/li\u003e\n\u003cli\u003e6x 12AU7 tubes (installed)\u003c\/li\u003e\n\u003cli\u003e2x 5AR4 rectifier tubes (installed)\u003c\/li\u003e\n\u003cli\u003eRemote control\u003c\/li\u003e\n\u003cli\u003ePower cable\u003c\/li\u003e\n\u003cli\u003eOwner's manual\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdiv style=\"border:1px solid #ddd;border-radius:8px;padding:10px 14px;margin:0 0 14px\"\u003e\n\u003cdiv style=\"font-weight:700;margin-bottom:6px\"\u003eBuyer's Guide\u003c\/div\u003e\n\u003cp style=\"margin:0\"\u003e\u003ca href=\"\/blogs\/how-to-guides\/primaluna-evo-400-tube-preamplifier-a-complete-buying-guide\"\u003eRead the full guide to the EVO 400 Tube Preamplifier\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"\/blogs\/how-to-guides\/primaluna-evo-tube-preamplifiers-a-complete-buying-guide-to-the-evo-100-200-300-and-400\"\u003eCompare the PrimaLuna tube preamplifier line\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThe PrimaLuna EVO 400 Tube Preamplifier sits at the top of the PrimaLuna preamp line, and it brings the kind of build and musicality that make tube preamplification worth chasing. Built as a dual mono design with tube rectification, it runs six 12AU7 tubes with two 5AR4 rectifiers, delivering a naturally textured, vibrant presentation from a genuinely quiet background. This is a reference grade preamp for listeners who want the soul of tubes without giving up flexibility.\u003c\/p\u003e\u003cp\u003ePoint to point wiring with premium Swiss wire, Takman resistors, and an ALPS Blue Velvet potentiometer keeps the signal path pure, while dual potted toroidal power transformers and PrimaLuna's exclusive AC Offset Killer push the noise floor down to a place that reveals space, air, and micro detail. Both balanced XLR and single ended RCA connections are on board, along with a home theater bypass, so the EVO 400 slots cleanly into a two channel rig or a combined music and cinema system.\u003c\/p\u003e\u003cp\u003eWith full remote control, an optional moving magnet phonostage, and a choice of silver or black finishes, the EVO 400 is a serious foundation for a high end system. As an authorized PrimaLuna dealer in Maryland, All Elite Audio is here to help you set it up right.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Mono Tube Rectified Design.\u003c\/strong\u003e The EVO 400 uses a dual mono layout with tube rectification, widely regarded as the gold standard in preamplifiers. The result is a lower noise floor and a natural, textured, and vibrant presentation because the signal path stays pure tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Offset Killer Exclusive.\u003c\/strong\u003e PrimaLuna's proprietary AC Offset Killer lowers transformer noise far beyond what most manufacturers attempt, regardless of how clean or dirty your wall power is. The payoff is a quieter background, more sense of space, and notes that seem to trail on forever.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Potted Toroidal Power Transformers.\u003c\/strong\u003e Two massive toroidal power transformers, enclosed in metal housings and potted in non-microphonic resin, radiate far less magnetic and acoustic noise than conventional transformers. They contribute much of the preamp's substantial weight and its clean, detailed sound.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint to Point Wiring with Premium Parts.\u003c\/strong\u003e Every EVO 400 is hand wired point to point using premium Swiss wire, Takman resistors prized for their low noise and musicality, and an ALPS Blue Velvet potentiometer for smooth, accurate volume control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced and Single Ended Connectivity.\u003c\/strong\u003e Three stereo RCA inputs and two stereo XLR inputs feed a preamp that offers both stereo RCA and stereo XLR outputs, plus a stereo RCA tape out. This flexibility lets the EVO 400 anchor nearly any high end system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHome Theater Bypass and Full Remote.\u003c\/strong\u003e A dedicated stereo RCA home theater bypass lets you fold the EVO 400 into a surround setup while preserving its role as your two channel heart. Full remote control keeps volume and source selection at your fingertips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Moving Magnet Phonostage.\u003c\/strong\u003e The EVO 400 can be fitted with an optional moving magnet phonostage, giving vinyl lovers a clean, integrated path for their turntable without an extra outboard box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow the PrimaLuna EVO 400 Tube Preamplifier Compares\u003c\/h3\u003e\u003ch4 style=\"font-size:1.15em;font-weight:800;margin:18px 0 4px\"\u003ePrimaLuna EVO 400 vs \u003ca href=\"\/products\/matrix-audio-mp-1\"\u003eMatrix Audio MP-1 Flagship Class A\u003c\/a\u003e\n\u003c\/h4\u003e\u003cp\u003eThe Matrix Audio MP-1 is a flagship solid state Class A preamplifier for listeners who want a modern, precise character. The EVO 400 counters with tube rectified warmth and texture that many find more organic and dimensional.\u003c\/p\u003e\u003ch4 style=\"font-size:1.15em;font-weight:800;margin:18px 0 4px\"\u003ePrimaLuna EVO 400 vs \u003ca href=\"\/products\/advance-paris-x-p1200-classic-preamplifier\"\u003eAdvance Paris X-P1200 Classic\u003c\/a\u003e\n\u003c\/h4\u003e\u003cp\u003eThe Advance Paris X-P1200 is a well built analog preamplifier with a clean, dynamic voice. The EVO 400 differs in its all tube dual mono topology and PrimaLuna's point to point construction, aimed squarely at tube enthusiasts.\u003c\/p\u003e\u003ch4 style=\"font-size:1.15em;font-weight:800;margin:18px 0 4px\"\u003ePrimaLuna EVO 400 vs \u003ca href=\"\/products\/parasound-halo-p6\"\u003eParasound HALO P6\u003c\/a\u003e\n\u003c\/h4\u003e\u003cp\u003eThe Parasound HALO P6 is a versatile solid state preamp with built in DAC and phono. The EVO 400 takes a purist tube route, prioritizing the natural resonance and low noise floor that tube rectification provides.\u003c\/p\u003e\u003ch4 style=\"font-size:1.15em;font-weight:800;margin:18px 0 4px\"\u003ePrimaLuna EVO 400 vs \u003ca href=\"\/products\/teac-ud-701n-usb-dac-network-player-preamp-headphone-amp\"\u003eTEAC Audio UD-701N USB DAC \/ Network Player \/ Preamp \/ Headphone Amp\u003c\/a\u003e\n\u003c\/h4\u003e\u003cp\u003eThe TEAC UD-701N is a do everything digital hub with DAC, streaming, and preamp duties in one chassis. The EVO 400 is a dedicated analog tube preamplifier for those who want maximum sonic purity from the line stage itself.\u003c\/p\u003e\n\u003ch4 style=\"font-size:1.15em;font-weight:800;margin:18px 0 4px\"\u003ePrimaLuna EVO 400 vs \u003ca href=\"\/products\/primaluna-evo-300-tube-preamplifier\"\u003ePrimaLuna EVO 300\u003c\/a\u003e (next step down)\u003c\/h4\u003e\u003cp\u003eThe EVO 300 is a more compact option with the same six 12AU7 tubes and Swiss wiring but single ended RCA connections only, without balanced XLR inputs and outputs.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the PrimaLuna EVO 400 Tube Preamplifier?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is PrimaLuna's top tier all tube preamplifier, built as a dual mono, tube rectified design with both balanced XLR and single ended RCA connectivity. It serves as the line stage heart of a high end audio system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat tubes does the EVO 400 use?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe EVO 400 runs six 12AU7 tubes in the audio circuit and two 5AR4 tubes for tube rectification. This all tube approach keeps the signal path pure and the noise floor low.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the EVO 400 a balanced preamplifier?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. It offers both balanced XLR and single ended RCA inputs and outputs, so you can integrate it with balanced or unbalanced sources and amplifiers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat inputs does the EVO 400 have?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt provides three stereo RCA inputs, two stereo XLR inputs, and a stereo RCA home theater bypass input for surround integration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outputs are available?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe EVO 400 has stereo RCA outputs, stereo XLR outputs, and a stereo RCA tape output, giving you flexible connection options for your amplifier and recording gear.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the AC Offset Killer?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe AC Offset Killer is a PrimaLuna exclusive circuit that lowers transformer noise well beyond conventional designs, no matter the quality of your wall power. It contributes to a quieter background and greater sense of space.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does the EVO 400 use tube rectification?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eExperts widely regard tube rectification as the gold standard in preamps. It is quieter than solid state rectification and keeps the circuit pure tube, delivering a natural, textured, and vibrant presentation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is point to point wiring?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePoint to point wiring means the EVO 400 is hand wired directly between components using premium Swiss wire rather than relying on printed circuit board traces for the signal path. It is a hallmark of PrimaLuna construction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat premium parts are used inside?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe EVO 400 uses Takman resistors, an ALPS Blue Velvet potentiometer, premium Swiss wire, the AC Offset Killer, and dual potted toroidal power transformers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the EVO 400 include a phonostage?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA moving magnet phonostage is available as an option. It integrates a clean vinyl input directly into the preamplifier without a separate box.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the EVO 400 have a home theater bypass?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. A dedicated stereo RCA home theater bypass lets you pass a channel through at unity gain, so the EVO 400 can serve in a combined music and cinema system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with a remote control?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The EVO 400 includes full remote control for volume and source selection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the gain and output impedance?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe EVO 400 offers 9.7 dB of gain with an output impedance of 256 ohms, well suited to driving a wide range of power amplifiers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finishes are available?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe EVO 400 is offered in silver and black finishes to match your system aesthetic.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow heavy is the EVO 400?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt weighs about 52.8 pounds, largely due to the massive potted toroidal power transformers. That substantial build reflects PrimaLuna's no compromise construction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the EVO 400?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe EVO 400 measures 15.2 inches wide, 8.1 inches high, and 15.9 inches deep. Be sure to allow ventilation clearance for the tubes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the EVO 400 with a solid state power amplifier?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The EVO 400 pairs well with tube or solid state power amplifiers, and its balanced and single ended outputs make matching straightforward.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the EVO 400 compare to solid state preamps like the Matrix Audio MP-1?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Matrix Audio MP-1 delivers a precise, modern Class A solid state character, while the EVO 400 offers the warmth, texture, and dimensionality that tube rectification is prized for. The right choice depends on your sonic preference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to worry about tube maintenance?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTubes are consumable and eventually need replacement, but PrimaLuna designs for extended tube life. Our team at All Elite Audio can advise on tube care and replacements when the time comes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from All Elite Audio?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAll Elite Audio is an authorized PrimaLuna dealer in Maryland, so your EVO 400 arrives with full factory warranty and genuine support. We offer expert guidance on system matching, setup, and tube care, and we carry it in stock and ready to ship or audition.\u003c\/p\u003e","brand":"PrimaLuna","offers":[{"title":"Silver","offer_id":45991672709173,"sku":null,"price":5995.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":45991672741941,"sku":null,"price":5995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/1704\/1461\/files\/primaluna-8236163825717-Silver-1.jpg?v=1789146057","url":"https:\/\/alleliteaudio.com\/products\/primaluna-evo-400-tube-preamplifier","provider":"All Elite Audio","version":"1.0","type":"link"}