{"product_id":"rogue-audio-sphinx-v3-magnum-integrated-amplifier","title":"Rogue Audio Sphinx v3 Magnum Integrated Amplifier","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;\"\u003eTubes at the Front, Real Power at the Back\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe Sphinx is a hybrid. A pure tube preamplifier stage runs into a Class D solid-state power amplifier built on Hypex modules, so you get tube character without a tube amp's power limits. The preamp uses 12AU7s in a mu-follower circuit, the same approach as Rogue's RP-5 standalone preamp.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eOutput is 100 watts per channel into 8 ohms and 200 watts into 4 ohms. Rogue hand-builds every unit in Pennsylvania, then tests, burns in and auditions each one. The machined aluminum faceplate comes in black or silver. The whole thing weighs 25 pounds.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWhat the Magnum Badge Buys You\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eRogue lists the Magnum changes plainly. There is a new main circuit board and a new rear one. The power supply, the coupling capacitors, the phono stage, and capacitors and resistors in key spots are all upgraded. So are the binding posts. The 12AU7s become JJ gold pin tubes, and the metal remote is included rather than optional.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe platform underneath earned its reputation first. Reviewing the standard Sphinx v3 for \u003cem\u003eStereophile\u003c\/em\u003e on 22 July 2020, Herb Reichert called it \"one of the greatest high-value audio products of all time.\" The Magnum starts from that amplifier and improves the parts inside it.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eA 375VA Transformer in a 25-Pound Box\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eEnergy storage comes from a custom 375VA toroidal transformer feeding a high-capacity linear supply. Regulated stages handle the midrange and treble separately. The circuit sits on a heavy two-ounce copper board, and volume runs through a custom Alps potentiometer rather than a cheap pot in the signal path.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eFour inputs cover most systems: three line level plus phono. Gold-plated RCA connectors are standard. Tube-driven active outputs let you add a subwoofer or bi-amp, and a discrete MOSFET headphone amplifier is built in for private listening.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eThe Phono Stage Adjusts, With One Catch\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. The 44dB setting suits moving magnets and high-output moving coils. The 60dB setting is for moving coils from 0.4mV up. Resistive loading adjusts too, and it ships set to 44dB with 47k loading.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eWorth knowing before you buy: those are slide switches on the main circuit board, not rear-panel controls. Changing them means powering down for 30 minutes and removing ten cover screws. Set it once for your cartridge and you are done.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWhat the Bench Figures Say\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eRogue publishes frequency response for the Magnum as 20Hz to 20kHz. Distortion is under 0.1% typical, staying below 1% even at rated power. Input sensitivity is 1.0V RMS, which any normal source will satisfy. Rogue covers parts and labor for three years and the tubes for six months, the same terms as the rest of the range.\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;\"\u003eRic Mancuso reviewed the Sphinx V3 Magnum for \u003cem\u003eEnjoy the Music.com\u003c\/em\u003e in April 2025. He heard \"more detail and air with the Magnum\" against the original, and concluded the amplifier \"is bordering on becoming one of the true classics in audio.\"\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eHe was not uncritical, and the sharpest point concerns speaker matching. Driving the 4-ohm Magnepan LRS, \"The LRS seemed to ask for a bit more power\", and he added subwoofers to fill the bottom end. With the easier Falcon LS3\/5A, he wrote, \"No subwoofer is needed.\"\u003c\/p\u003e\n\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 character with real wattage\u003c\/strong\u003e — the tube preamp stage sets the tone and the solid-state output stage supplies 200 watts into 4 ohms, enough for speakers a pure tube amp would leave sounding thin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou play records and want one box\u003c\/strong\u003e — the phono stage handles both cartridge types, so no outboard preamp and no extra interconnect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou listen on headphones\u003c\/strong\u003e — the headphone amp uses discrete MOSFETs, and Mancuso was \"surprised by how nice sounding the headphone experience was on the Magnum\".\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou already know the Sphinx sound\u003c\/strong\u003e — the Magnum keeps the platform Reichert praised and spends the extra money on parts, not on a redesign.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIf you want an all-tube power stage,\u003c\/strong\u003e this is a hybrid and always will be — Rogue's \u003ca href=\"https:\/\/www.audioadvisor.com\/products\/rogue-audio-cronus-magnum-iii-integrated-black\" style=\"color:#8a5a2b;\"\u003eCronus Magnum III\u003c\/a\u003e runs tubes all the way to the speaker terminals.\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 upgraded binding posts. A turntable connects straight to the phono input, with gain set for your cartridge. Three line-level inputs take a CD player, a streamer or a tuner. Headphones plug in at the front, and the active outputs feed a subwoofer or a second amplifier.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe included metal remote handles volume and mute. That really is all it does, and all you need from the chair.\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 a system around the Sphinx v3 Magnum? Start here:\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 The phono stage is already here, for either cartridge type — browse \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 200 watts into 4 ohms opens up the options — 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\u003eSubwoofer:\u003c\/strong\u003e The tube-driven active outputs are made for this — browse \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/subwoofers\" style=\"color:#8a5a2b;\"\u003eSubwoofers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphones:\u003c\/strong\u003e A discrete MOSFET headphone stage deserves good ones — see our \u003ca href=\"https:\/\/www.audioadvisor.com\/collections\/headphones\" style=\"color:#8a5a2b;\"\u003eHeadphones\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;\"\u003eWhat does the Magnum add over the standard Sphinx v3?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eRogue specifies a new main circuit board and rear circuit board, power supply upgrades, upgraded coupling capacitors, upgrades to the phono stage, upgraded capacitors and resistors in key spots, upgraded binding posts, JJ gold pin 12AU7s, and the metal remote.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWill the phono stage work with my cartridge?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eVery likely. It offers 44dB of gain for moving magnet and high-output moving coil, or 60dB for moving coils of 0.4mV and up, plus adjustable resistive loading.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eHow do I change the phono gain or loading?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eWith slide switches on the main circuit board. Power the amplifier down for 30 minutes, remove the ten cover screws, and set them. It ships at 44dB with 47k loading, so many owners never need to open it at all.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eIs the power amplifier tubes or solid state?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eSolid state, and specifically Class D built on Hypex modules. The Sphinx is a hybrid: 12AU7 tubes in the preamp stage feeding a Class D output stage rated at 100 watts into 8 ohms and 200 into 4. That is how a 100-watt amplifier stays down at 25 pounds.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eCan I add a subwoofer?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eYes. Tube-driven active outputs are provided for a subwoofer or for bi-amping, alongside fixed outputs for other outboard gear. Reviewers pairing the Sphinx with lean standmounts have found a sub fills in the bottom end nicely.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eWhat does the warranty cover?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eRogue Audio covers parts and labor for three years from the date of retail purchase, and the vacuum tubes for six months. The same terms apply across the Rogue amplifier line.\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;\"\u003eOur own walkthrough of the Sphinx v3, the amplifier the Magnum is built on:\u003c\/p\u003e\n\n\u003ciframe width=\"100%\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/w1pZ264WoS4\" title=\"Rogue Audio Sphinx v3 Integrated Amplifier\" 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;\"\u003eSteve Guttenberg reviews the standard Sphinx v3 in his own listening room:\u003c\/p\u003e\n\n\u003ciframe width=\"100%\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/b7B8wn9-x1w\" title=\"REVIEW: Rogue Sphinx v3, let the good times roll\" 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 hybrid amplifiers, phono stages, or matching headphones to an amp? 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":45981215326381,"sku":"NEW-RASPHV3MAG-BLKR","price":1995.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ New","offer_id":45982781898925,"sku":"NEW-RASPHV3MAG-SILR","price":1995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3708\/1773\/files\/RASPHV3MAG_BLK_01_2024__12409.1725040719.1280.1280_c7489222-7f8f-4e45-b6dd-48543001c3db.jpg?v=1778151569","url":"https:\/\/www.audioadvisor.com\/products\/rogue-audio-sphinx-v3-magnum-integrated-amplifier","provider":"Audio Advisor","version":"1.0","type":"link"}