{"product_id":"rogue-audio-cronus-magnum-iii-integrated","title":"Rogue Audio Cronus Magnum III Integrated","description":"\u003cdiv style=\"max-width:720px;margin:0 auto;padding:32px 24px 48px 24px;background:#ffffff;\"\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:0 0 0.35em 0;font-weight:600;\"\u003eThe Cronus Magnum III Puts Two Amplifiers in One Chassis\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eRogue Audio builds the Cronus Magnum III by hand in Brodheadsville, Pennsylvania. It is an all-tube integrated amplifier, and it is the third generation of a line that built the company's reputation. Rogue designs and assembles every one in the USA.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eA switch on the back panel changes how the output stage runs. In ultralinear it delivers 100 watts per channel. In triode it delivers 55. Transformer taps for 4 and 8 ohm speakers are both provided. The amplifier weighs 55 pounds and measures 18 inches wide, with a machined aluminum faceplate in black or silver.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eYour Turntable Plugs Straight In, and So Do Your Headphones\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eFour RCA inputs cover a phono source and three line sources. Buffered variable outputs feed a subwoofer or a second amplifier for bi-amping. A quarter-inch headphone jack sits on the front, driven by a 2-watt amplifier. An aluminum remote handles volume and mute. Rogue covers the amplifier for three years, and the tubes for six months.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWhy It Weighs 55 Pounds\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eMost of that weight is transformers and power supply. Rogue uses a large linear supply with high storage, and a heavy two-ounce copper circuit board. Slow-start sequencing brings the tubes up gently at switch-on, which is easier on them than an abrupt turn-on.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe tube complement is four KT88 output tubes, three 12AU7s and two 12AX7s. The center 12AU7 is the preamp tube. KT88s are current production and easy to source, so retubing years from now should not be a hunt. KT120s are available as an optional upgrade.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eBias the Tubes Yourself, With the Tool in the Box\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eA meter, potentiometers and switches on the front panel let you set the output tube bias. Rogue supplies the bias tool. The manual asks you to leave it alone unless a tube reads more than 4 to 5 mA off target, so this is an occasional check rather than a chore.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eThe Phono Stage Adapts to Your Cartridge\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe phono section takes moving-magnet and moving-coil cartridges. Gain switches give 45dB or 60dB, each within 1dB from 20Hz to 20kHz. Five resistive load settings let you tune it further. It ships set to 45dB and 47k ohms, which suits most high-output cartridges.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eChanging gain or loading means removing the top cover, so set it once for your cartridge. Bandwidth measures 5Hz to 30kHz within 1dB. Distortion stays under 0.1% typically and under 1% at rated power. Input sensitivity is 1.0V RMS.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe headphone circuit is new to this generation. Rogue describes it as a simplified single-ended version of its RH-5 headphone amplifier, built around MOSFET buffers, with a 32-ohm output impedance.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWhat Reviewers Are Saying\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eWayne Garcia, writing in \u003cem\u003eThe Absolute Sound\u003c\/em\u003e on January 24, 2023, called it \"a terrific-sounding, all-tube integrated amp that is so musically engaging, such a joy to use, and such a superb value that it's completely won me over.\"\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eRon Nagle, reviewing for \u003cem\u003eEnjoy the Music.com\u003c\/em\u003e on May 7, 2019, wrote: \"Rogue Audio has my admiration for the overall build quality and sonic performance of their Cronus Magnum III musical instrument.\"\u003c\/p\u003e\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWho Is This Integrated Amplifier Best For?\u003c\/h2\u003e\n\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou want tube sound without a rack of separates\u003c\/strong\u003e — preamp, power amp, phono stage and headphone amp are all in one chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou play vinyl and your cartridge might change\u003c\/strong\u003e — the phono stage handles moving-magnet and moving-coil, with switchable gain and five load settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou want to hear the difference between operating modes\u003c\/strong\u003e — a rear switch moves between 100 watts ultralinear and 55 watts triode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou like gear you can maintain\u003c\/strong\u003e — front-panel bias adjustment, a supplied bias tool, and KT88 tubes that are still in production.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIf you want the DAC and streaming built in,\u003c\/strong\u003e the Cronus Magnum III is all-analog — every input on the back is an RCA jack. Add one of our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/digital-to-analog-converters\" style=\"color:#8a5a2b;\"\u003eDACs\u003c\/a\u003e and it plays anything.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eHow Does It Connect to Your System?\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eSpeakers go to the gold-plated binding posts, which take spade, lug or bare wire. Pick the 4 or 8 ohm tap for your speakers; the amplifier ships set to 8 ohms, and changing it means opening the top cover. Your turntable goes to the phono input, and up to three more sources fill the line inputs.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eHeadphones plug into the front panel. If you add a subwoofer or a second amplifier later, the buffered variable outputs are already there. The power cord is a detachable IEC, so you can change it.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThen it is one knob, one switch, and a lot of glass.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003ePairs Well With\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eBuilding around the Cronus Magnum III? Here are some good companions:\u003c\/p\u003e\n\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurntable:\u003c\/strong\u003e Put that MM\/MC phono stage to work — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/turntables\" style=\"color:#8a5a2b;\"\u003eTurntables\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeakers:\u003c\/strong\u003e 100 watts of tube power drives a serious pair — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/floorstanding-speakers\" style=\"color:#8a5a2b;\"\u003eFloorstanding Speakers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeaker cable:\u003c\/strong\u003e Match the tap you choose — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/speaker-cables\" style=\"color:#8a5a2b;\"\u003eSpeaker Cables\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudio rack:\u003c\/strong\u003e Fifty-five pounds of tube amp wants a solid shelf — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/audio-racks\" style=\"color:#8a5a2b;\"\u003eAudio Racks\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eHow much power does the Cronus Magnum III deliver?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003e100 watts per channel in ultralinear mode, and 55 watts RMS per channel in triode. Transformer taps are provided for both 4 and 8 ohm speakers.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWhat is the difference between triode and ultralinear?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThey are two ways of running the same output tubes, selected by a switch on the back panel. Ultralinear gives you the full 100 watts per channel; triode gives you 55. Rogue's own guidance is to try both with your speakers and use the one you prefer.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eDoes it have a phono stage for my turntable?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eYes, and it covers both cartridge types. Switchable gain gives 45dB for moving-magnet and high-output moving-coil cartridges, or 60dB for low-output moving-coil, with five resistive load settings.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eDo I have to bias the tubes myself?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eBias is user-adjustable from the front panel using the meter and the bias tool Rogue supplies. The manual says to leave it unless a tube drifts more than 4 to 5 mA from target, so it is a periodic check rather than routine maintenance.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWhat comes in the box?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe tubes, spare fuses, the bias tool, an aluminum remote for volume and mute, and a detachable IEC power cord. The full tube cage is optional and sold separately — we stock the \u003ca href=\"https:\/\/www.audioadvisor.com\/products\/rogue-audio-atlas-or-cronus-tube-cover-black\" style=\"color:#8a5a2b;\"\u003eRogue Audio tube cover\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWhat warranty does it carry?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThree years on parts and workmanship from the date of retail purchase, and six months on the vacuum tubes. Rogue's warranty is valid in the United States and applies to the original purchaser buying from an authorized dealer.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eSee It in Action\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.5em 0;line-height:1.55;\"\u003eNew Record Day spends a full review with the Cronus Magnum III and asks where it lands among tube integrateds:\u003c\/p\u003e\n\n\u003ciframe width=\"100%\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/RtpGpb7E_E0\" title=\"“Audiophile” Hi-Fi Tube Amplifier of the Decade?! Rogue Audio Cronus III Magnum\" style=\"border:0;margin:0 0 0.9em 0;display:block;\" allowfullscreen\u003e\u003c\/iframe\u003e\n\n\u003cp style=\"margin:0 0 0.5em 0;line-height:1.55;\"\u003eSheila Berdan unboxes one and walks through the chassis, controls and rear panel:\u003c\/p\u003e\n\n\u003ciframe width=\"100%\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/_VzYhLHNq5Y\" title=\"NEW Rogue Audio Cronus Magnum III Integrated Amplifier UNBOXING \u0026amp; REVIEW - Brooks Berdan Ltd.\" style=\"border:0;margin:0 0 0.9em 0;display:block;\" allowfullscreen\u003e\u003c\/iframe\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWhy Audio Advisor?\u003c\/h2\u003e\n\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e40+ Years of Expertise — Since 1981, we've helped over a million music lovers find the right gear.\u003c\/li\u003e\n\u003cli\u003e60-Day Money-Back Guarantee — Take your time. Listen, enjoy, and make sure it's right for you.\u003c\/li\u003e\n\u003cli\u003eReal Experts, Real Help — Our team is here to answer your questions at 800-942-0220, weekdays 9am–6pm EST.\u003c\/li\u003e\n\u003cli\u003eFree Shipping — On orders over $49, delivered to your door.\u003c\/li\u003e\n\u003cli\u003eFlexible Payment Options — Financing available so you can start listening now.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eLearn More\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eWant to learn more about tube amplifiers, phono stages, or matching speakers to a tube integrated? Visit our \u003ca href=\"https:\/\/learningcenter.audioadvisor.com\/\" style=\"color:#8a5a2b;\"\u003eLearning Center\u003c\/a\u003e for guides, tips, and expert advice.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Rogue Audio","offers":[{"title":"Black \/ New","offer_id":45983403540653,"sku":"NEW-RACROMIII-BLK","price":3495.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ New","offer_id":45982920802477,"sku":"NEW-RACROMIII-SIL","price":3495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3708\/1773\/files\/RogueMagnumIIITubeAmplifier-Black-K_O.png?v=1787684759","url":"https:\/\/www.audioadvisor.com\/products\/rogue-audio-cronus-magnum-iii-integrated","provider":"Audio Advisor","version":"1.0","type":"link"}