{"product_id":"primaluna-evo-400-tube-integrated-amplifier","title":"PrimaLuna EVO 400 Tube Integrated Amplifier","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 integrated amplifier, EL34 push pull, triode or ultralinear\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\"\u003ePower Output\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003e70 watts per channel\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, 8x EL34\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\"\u003e5x stereo RCA, 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\"\u003e4 and 8 ohm speaker taps, stereo RCA tape out, stereo\/mono subwoofer out, quarter inch headphone\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\"\u003eOperation\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003eTriode or ultralinear, full remote control\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\"\u003eBiasing\u003c\/td\u003e\n\u003ctd style=\"padding:6px 0\"\u003eAdaptive AutoBias, Bad Tube Indicator\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, wide bandwidth output transformers, potted toroidal power transformer\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, 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\"\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\"\u003e68.2 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 Integrated Amplifier 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 integrated amplifier\u003c\/li\u003e\n\u003cli\u003eFull function remote control\u003c\/li\u003e\n\u003cli\u003eSet of EL34 output tubes (installed)\u003c\/li\u003e\n\u003cli\u003eSet of 12AU7 driver tubes (installed)\u003c\/li\u003e\n\u003cli\u003eTube cage\u003c\/li\u003e\n\u003cli\u003ePower cord\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-integrated-amplifier-a-complete-buying-guide\"\u003eRead the full guide to the EVO 400 Tube Integrated Amplifier\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"\/blogs\/how-to-guides\/primaluna-evo-tube-integrated-amplifiers-which-one-is-right-for-you\"\u003eCompare the PrimaLuna tube integrated amplifier line\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThe PrimaLuna EVO 400 sits near the top of PrimaLuna's all-tube integrated lineup, and it shows the moment you lift the lid. Eight EL34 output tubes running in push pull deliver 70 watts per channel, with a front panel switch that lets you move between the warmth of triode and the wider bandwidth punch of ultralinear operation. It is a genuinely flexible one-box tube system that rewards both casual listening and serious critical sessions.\u003c\/p\u003e\u003cp\u003eBuild quality is the heart of the PrimaLuna story. The EVO 400 uses hand done point to point wiring with premium Swiss wire, Takman resistors, an ALPS Blue Velvet potentiometer, and heavy potted transformers. Adaptive AutoBias keeps the tubes perfectly biased at all times, and the Bad Tube Indicator makes ownership approachable even if you have never owned a tube amp before. This is the kind of engineering we love showing off on the AEA demo floor.\u003c\/p\u003e\u003cp\u003eWith five line inputs, a home theater bypass, transformer coupled subwoofer output, and a genuinely excellent all-tube headphone stage, the EVO 400 covers nearly every use case a music lover could ask for. Pair it with efficient speakers and it becomes the emotional center of a room.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEL34 Push Pull Power.\u003c\/strong\u003e Eight EL34 output tubes deliver 70 watts per channel, enough authority to drive a wide range of speakers with the tone tube lovers crave.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriode or Ultralinear Switching.\u003c\/strong\u003e A front panel switch lets you choose the intimate warmth of triode or the wider bandwidth and dynamics of ultralinear operation, all on the fly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdaptive AutoBias.\u003c\/strong\u003e The amplifier continuously biases each output tube for you, which extends tube life, reduces distortion, and removes the guesswork of manual biasing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBad Tube Indicator.\u003c\/strong\u003e If a tube fails, the amp enters protection mode and a red LED lights in front of the tube that needs replacing. Swap it and keep listening, no soldering iron required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-Tube Headphone Stage.\u003c\/strong\u003e An output transformer coupled headphone amp lets you enjoy triode or ultralinear listening through demanding planar and dynamic headphones alike.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint to Point Construction.\u003c\/strong\u003e Hand wired with premium Swiss wire, Takman resistors, an ALPS Blue Velvet potentiometer, and heavy potted transformers for long term reliability and low noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Friendly Connectivity.\u003c\/strong\u003e Five RCA inputs, a home theater bypass, tape out, and a transformer coupled subwoofer out make integration into any system straightforward.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow the PrimaLuna EVO 400 Tube Integrated Amplifier Compares\u003c\/h3\u003e\u003ch4 style=\"font-size:1.15em;font-weight:800;margin:18px 0 4px\"\u003ePrimaLuna EVO 400 Tube vs \u003ca href=\"\/products\/accuphase-e-3000-integrated-amplifier\"\u003eAccuphase E-3000\u003c\/a\u003e\n\u003c\/h4\u003e\u003cp\u003eThe Accuphase is a refined solid state alternative with meticulous build and a silky presentation. The EVO 400 answers with genuine tube tone and triode or ultralinear flexibility that only vacuum tubes provide.\u003c\/p\u003e\u003ch4 style=\"font-size:1.15em;font-weight:800;margin:18px 0 4px\"\u003ePrimaLuna EVO 400 Tube vs \u003ca href=\"\/products\/luxman-l-505z-integrated-amplifier\"\u003eLuxman L-505Z\u003c\/a\u003e\n\u003c\/h4\u003e\u003cp\u003eThe Luxman offers polished solid state control and its signature warmth. If you want an actual all-tube experience with hands-on triode switching, the EVO 400 is the natural choice.\u003c\/p\u003e\u003ch4 style=\"font-size:1.15em;font-weight:800;margin:18px 0 4px\"\u003ePrimaLuna EVO 400 Tube vs \u003ca href=\"\/products\/yamaha-a-s2200\"\u003eYamaha A-S2200\u003c\/a\u003e\n\u003c\/h4\u003e\u003cp\u003eThe Yamaha brings classic styling and clean transistor power with those iconic meters. The PrimaLuna trades meters for glowing tubes and a distinctly organic midrange character.\u003c\/p\u003e\u003ch4 style=\"font-size:1.15em;font-weight:800;margin:18px 0 4px\"\u003ePrimaLuna EVO 400 Tube vs \u003ca href=\"\/products\/advance-paris-a12-apex\"\u003eAdvance Paris A12 APEX\u003c\/a\u003e\n\u003c\/h4\u003e\u003cp\u003eThe Advance Paris delivers big solid state wattage and hybrid tube touches. The EVO 400 is fully tube throughout, offering a more consistently valve-flavored sound top to bottom.\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-integrated-amplifier\"\u003ePrimaLuna EVO 300\u003c\/a\u003e (next step down)\u003c\/h4\u003e\u003cp\u003eThe EVO 300 is a more compact option that keeps triode and ultralinear operation but uses four EL34 for 42 watts per channel instead of eight EL34 for 70.\u003c\/p\u003e\u003ch3\u003eRecommended Speakers\u003c\/h3\u003e\u003cp\u003eTube amplifiers love efficiency, and the EVO 400's 70 watts per channel go a very long way with high sensitivity speakers. We lead with Klipsch Heritage for their natural synergy with EL34 tube tone, then round out with a few other efficient favorites from our floor.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/klipsch-cornwall-iv\"\u003e\u003cstrong\u003eKlipsch Cornwall IV\u003c\/strong\u003e\u003c\/a\u003e: A benchmark pairing. The Cornwall IV's high efficiency and effortless dynamics let the EVO 400's tube character shine with room-filling scale and lifelike presence.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/klipsch-heritage-forte-iv\"\u003e\u003cstrong\u003eKlipsch Forte IV\u003c\/strong\u003e\u003c\/a\u003e: A slightly more compact Heritage option that is still very easy to drive. The Forte IV delivers big, punchy sound with tube warmth to spare from the EVO 400.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/klipsch-heresy-iv\"\u003e\u003cstrong\u003eKlipsch Heresy IV\u003c\/strong\u003e\u003c\/a\u003e: A compact Heritage design that thrives on tube power. The Heresy IV offers vivid, immediate sound and pairs beautifully in smaller and medium rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/klipsch-lascala-al6\"\u003e\u003cstrong\u003eKlipsch La Scala AL6\u003c\/strong\u003e\u003c\/a\u003e: For those wanting reference level dynamics, the fully horn loaded La Scala AL6 makes the most of every tube watt with startling clarity and impact.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/klipsch-rf-7-iii\"\u003e\u003cstrong\u003eKlipsch RF-7 III\u003c\/strong\u003e\u003c\/a\u003e: A high efficiency Reference tower that mates cleanly with the EVO 400, delivering energetic, detailed sound with plenty of headroom.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat kind of amplifier is the PrimaLuna EVO 400?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is an all-tube integrated amplifier using an EL34 push pull output stage, with switchable triode or ultralinear operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much power does the EVO 400 produce?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt delivers 70 watts per channel, ample for most efficient and moderately efficient speakers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat tubes does the EVO 400 use?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt uses eight EL34 output tubes and six 12AU7 tubes in the driver and preamp stages.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between triode and ultralinear mode?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTriode mode offers a warmer, more intimate presentation, while ultralinear mode delivers wider bandwidth and more dynamic drive. You can switch between them with the remote or front panel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I have to manually bias the tubes?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. Adaptive AutoBias continuously sets the correct bias for each tube automatically, which simplifies ownership and extends tube life.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat happens if a tube fails?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe amplifier enters protection mode and a red LED lights in front of the failed tube. You simply replace that tube and resume listening.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I roll different tubes in the EVO 400?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The Adaptive AutoBias system accommodates a range of compatible output tubes, making tube rolling straightforward. Ask our team about compatible types.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the EVO 400 have a headphone output?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes, it includes an output transformer coupled all-tube headphone stage with a quarter inch jack that works with demanding planar and dynamic headphones.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I connect a subwoofer?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes, it offers a transformer coupled subwoofer output designed for easier integration with your main speakers, plus a stereo or mono option.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it have a home theater bypass?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes, there is a dedicated home theater bypass input so you can integrate the EVO 400 into a surround system while preserving its stereo performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a phono stage included?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA moving magnet phono stage is available as a factory option. Let us know if you plan to run a turntable and we can advise on configuration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat speaker taps does it have?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt provides 4 ohm and 8 ohm speaker taps so you can match a variety of loudspeaker impedances.\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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow heavy is the EVO 400?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt weighs 68.2 pounds, thanks largely to its substantial potted transformers and robust chassis.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt measures 15.2 inches wide, 8.1 inches high, and 15.9 inches deep. Allow extra clearance above for ventilation and tube cage removal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many inputs does it have?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt offers five stereo RCA line inputs plus the RCA home theater bypass input, along with a tape output.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with a remote control?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes, it includes a full function remote that controls volume, input selection, and triode or ultralinear switching.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat speakers pair best with the EVO 400?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHigh efficiency designs are ideal for tube amps. Klipsch Heritage models are a superb match, and we cover our favorites in the recommended speakers section.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the EVO 400 a good choice for a first tube amp?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAbsolutely. Adaptive AutoBias and the Bad Tube Indicator make it one of the most approachable tube integrateds available while still satisfying seasoned enthusiasts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy from All Elite Audio?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWe are an authorized PrimaLuna dealer in Maryland with the EVO 400 in stock and set up for audition. Our team helps with speaker matching, tube guidance, and long term support so you buy with confidence.\u003c\/p\u003e","brand":"PrimaLuna","offers":[{"title":"Silver","offer_id":45991668088885,"sku":null,"price":6495.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":45991668121653,"sku":null,"price":6495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/1704\/1461\/files\/primaluna-8236160483381-Silver-1.jpg?v=1789145785","url":"https:\/\/alleliteaudio.com\/products\/primaluna-evo-400-tube-integrated-amplifier","provider":"All Elite Audio","version":"1.0","type":"link"}