{"product_id":"mcintosh-mc451","title":"MC451 1-Channel Power Amplifier","description":"\u003cdiv class=\"mc-editorial\"\u003e\n\u003cfigure class=\"mc-img-block\"\u003e\u003cimg src=\"https:\/\/www.mcintoshlabs.com\/-\/media\/Images\/mcintoshlabs\/Products\/ProductImages\/Shared\/TAS-2023-POY-AWARD-LOGO.jpg?h=339\u0026amp;w=340\u0026amp;rev=ebe11f8ed4ba4085bcc3d024da508500\" alt=\"The Absolute Sound 2023 Product of the Year Award\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003csection id=\"overview\" class=\"mc-section\"\u003e\u003cp\u003eThe MC451 Dual Mono Amplifier joins the MC901 in offering the ultimate solution to bi-amping a loudspeaker. Like the MC901, the MC451 uses our Hybrid Drive™ technology that combines a separate vacuum tube and solid state amplifier onto one single chassis to produce the best possible sound performance from a bi-ampable speaker. Unlike the larger MC901, the MC451 has a more conventional McIntosh form factor and size, allowing it to fit into home audio systems, racks, and furniture more easily. Adding a pair of MC451s to your stereo system will allow your prized speakers to perform like never before.\u003c\/p\u003e\u003c\/section\u003e\n\u003cfigure class=\"mc-img-block\"\u003e\u003cimg src=\"https:\/\/www.mcintoshlabs.com\/-\/media\/images\/mcintoshlabs\/products\/productimages\/mc451\/mc451-lifestyle-horizontal.jpg?rev=1c7152650ec14fcab8d7e2e2e0386347\u0026amp;revision=1c715265-0ec1-4fca-b8d7-e2e2e0386347\" alt=\"McIntosh MC451 Amplifier\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003csection id=\"section-1\" class=\"mc-section\"\u003e\u003cp\u003e\"I’ve heard enough systems and recordings to know that the midrange and treble nuances provided by the MC451 will improve the musicality of a very substantial number of high-end rigs and suit the personal taste of a wide range of audiophiles. It did an outstanding job amplifying every source I auditioned, from the latest LPs and SACD\/DSD to high-resolution PCM recordings… Put as simply as possible, the MC451 sounds different enough to help redefine the state of the art for many high-end audiophiles.\" - The Absolute Sound\u003c\/p\u003e\u003c\/section\u003e\n\u003cfigure class=\"mc-video-block\"\u003e\u003cvideo autoplay loop muted playsinline\u003e\u003csource src=\"https:\/\/www.mcintoshlabs.com\/-\/media\/Videos\/McIntoshLabs\/Products\/MC451\/MC451-cage-animation.mp4?rev=9f793cd274994a7a83c7da198afcbd52\u0026amp;revision=9f793cd2-7499-4a7a-83c7-da198afcbd52\" type=\"video\/mp4\"\u003e\u003c\/video\u003e\u003c\/figure\u003e\n\u003csection id=\"section-2\" class=\"mc-section\"\u003e\u003cp\u003eThe MC451 is comprised of a 150 Watt vacuum tube amplifier and a 300 Watt solid state amplifier, which is more than enough power to drive virtually all speakers.\u003c\/p\u003e\n\u003cp\u003eThe vacuum tube section drives the speaker's midranges and tweeters, while the solid state section drives the woofers. The 150 Watt vacuum tube amplifier is powered by four KT88 output tubes which are located under a removable wire cage, plus two 12AT7 and one 12AX7A signal tubes; it uses our patented Unity Coupled Circuit output transformer to deliver its full 150 Watts into almost any speaker regardless if it has 2, 4 or 8 Ohm impedance.\u003c\/p\u003e\n\u003cp\u003eSimilarly, the 300 Watt solid state amplifier delivers its full 300 Watts into a 2, 4 or 8 Ohm impedance speaker via our Autoformer™ technology.\u003c\/p\u003e\u003c\/section\u003e\n\u003csection id=\"section-3\" class=\"mc-section\"\u003e\u003cp\u003eThe two amplifiers in the MC451 are designed to work together in a synergistic relationship and are specifically engineered to assure that each only amplifies its intended frequencies. The large but quiet toroidal transformer generates enough power so that neither amplifier robs power or performance from the other. All of this results in easy bi-amping with unparalleled performance and sound reproduction from your speakers.\u003c\/p\u003e\u003c\/section\u003e\n\u003cfigure class=\"mc-img-block\"\u003e\u003cimg src=\"https:\/\/www.mcintoshlabs.com\/-\/media\/images\/mcintoshlabs\/products\/productimages\/mc451\/mc451-back-background1-crop2.jpg?rev=59073e2b642a4efd8173650375ae895e\u0026amp;revision=59073e2b-642a-4efd-8173-650375ae895e\" alt=\"McIntosh MC451 Amplifier\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003csection id=\"section-4\" class=\"mc-section\"\u003e\u003cp\u003eBi-amping your speakers with the MC451 is easy. No longer do you need fiddle with two separate amplifiers, an external crossover, and a lot of trial and error to properly configure the two separate amplifiers with often times only so-so results. The MC451 solves these hassles thanks to its internal, adjustable crossover. The MC451’s crossover tailors the output frequency range of each amplifier section to the attached loudspeaker. Simply set the CROSSOVER POINT knob on the back of the MC451 to the loudspeaker’s crossover point, then frequencies below the crossover point will be sent to the solid state amplifier and frequencies above it will be sent to the vacuum tube amplifier.\u003c\/p\u003e\n\u003cp\u003eThis adjustable crossover allows you to optimize the performance of both amplifier sections to your speaker's specifications and to your listening preferences. Gain levels for the vacuum tube amplifier can be adjusted from -6dB to +3dB. A direct feed can also be connected to each amplifier section, thus bypassing the internal crossover.\u003c\/p\u003e\u003c\/section\u003e\n\u003csection id=\"section-5\" class=\"mc-section\"\u003e\u003cp\u003eThe MC451 features our DualView™ Power Output Meter. The DualView meter features two of our traditional, fast responding mechanical meters stacked above and below each other in a single meter window; one meter is dedicated to the 150 Watt vacuum tube amp and the other to the 300 Watt solid state amp. Each meter operates independently of the other and displays the real time power reading of each amplifier section.\u003c\/p\u003e\u003c\/section\u003e\n\u003cfigure class=\"mc-img-block\"\u003e\u003cimg src=\"https:\/\/www.mcintoshlabs.com\/-\/media\/images\/mcintoshlabs\/products\/productimages\/mc451\/mc451-front-close-up1.jpg?rev=ccaa61f1ea1642469b43ad2a3e554cfd\u0026amp;revision=ccaa61f1-ea16-4246-9b43-ad2a3e554cfd\" alt=\"McIntosh MC451 Amplifier\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003csection id=\"section-6\" class=\"mc-section\"\u003e\u003cp\u003eIn addition to everything already mentioned, the MC451 comes with a multitude of other McIntosh amplifier the technologies:\u003c\/p\u003e\u003c\/section\u003e\n\u003cfigure class=\"mc-video-block\"\u003e\u003cvideo autoplay loop muted playsinline poster=\"https:\/\/www.mcintoshlabs.com\/-\/media\/videos\/mcintoshlabs\/short---solid-cinch-binding-posts-thumbnail.jpg?rev=1f4e39e1994b498ab3159ac6bf37e94e\u0026amp;revision=1f4e39e1-994b-498a-b315-9ac6bf37e94e\"\u003e\u003csource src=\"https:\/\/www.mcintoshlabs.com\/-\/media\/Videos\/McIntoshLabs\/Short---Solid-Cinch-binding-posts-1280a.mp4?rev=8d5ed2f72f4440f68caab51425a8e46e\u0026amp;revision=8d5ed2f7-2f44-40f6-8caa-b51425a8e46e\" type=\"video\/mp4\"\u003e\u003c\/video\u003e\u003c\/figure\u003e\n\u003csection id=\"section-7\" class=\"mc-section\"\u003e\u003cp\u003eThe uncompromising fit and finish of the MC451 is highlighted by familiar McIntosh design cues. The front features a signature black glass faceplate with three clear windows that allow viewing of the vacuum tubes, the DualView meter, two rotary control knobs, an illuminated logo and lettering, and built-in aluminum handles. The top is highlighted by a series of block diagrams printed on glass inserts outlining the circuitry and specifications of the unit. All of this sits atop of stainless steel chassis that's been polished to a pristine mirror finish.\u003c\/p\u003e\u003c\/section\u003e\n\u003cfigure class=\"mc-img-block\"\u003e\u003cimg src=\"https:\/\/www.mcintoshlabs.com\/-\/media\/images\/mcintoshlabs\/products\/productimages\/mc451\/mc451-pedestal-square.jpg?rev=7c940bf18c6c44eea051558a5e32f914\u0026amp;revision=7c940bf1-8c6c-44ee-a051-558a5e32f914\" alt=\"McIntosh MC451 Amplifier\" loading=\"lazy\"\u003e\u003c\/figure\u003e\n\u003csection id=\"section-8\" class=\"mc-section\"\u003e\u003cp\u003eThe MC451 amplifier can be combined with a variety of preamplifiers, turntables, CD players, media streamers, speakers, and other specialty products to form a complete home audio system designed for bi-amping loudspeakers. Contact your local dealer to learn more.\u003c\/p\u003e\u003c\/section\u003e\n\u003cdetails id=\"specifications\" class=\"mc-accordion\"\u003e\u003csummary\u003eSpecifications\u003c\/summary\u003e\u003cdiv class=\"mc-spec-body\"\u003e\n\u003cp class=\"mc-spec-heading\"\u003eElectronic Specifications\u003c\/p\u003e\n\u003cdiv class=\"mc-spec-grid\"\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eFTC Power Output Rating\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eSolid State section: 300 W\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003eVacuum Tube section: 150 W\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003ePower Output per Channel\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eSolid State section: 300 W 2, 4 or 8 ohms\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003eVacuum Tube section: 150 W into 2, 4 or 8 ohms\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eNumber of Channels\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003e1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eTotal Harmonic Distortion\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eSolid State section: 0.005% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20kHz\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003eVacuum Tube section: 0.5% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20kHz\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eS\/N below rated output\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eSolid State section: 118dB\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003eVacuum Tube section: 112dB\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eDynamic Headroom\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eSolid State section: 2.5dB\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003eVacuum Tube section: 1.2dB\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eDamping Factor\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eSolid State section: \u0026gt;40\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003eVacuum Tube section: \u0026gt;18\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eRated Power Band\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eSolid State section: 20Hz to 20kHz\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003eVacuum Tube section: 20Hz to 20kHz\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eFrequency Response\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eSolid State section:\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003e+0, -0.25dB from 20Hz to 20kHz\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003e+0, -3dB from 10Hz to 100kHz\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003eVacuum Tube section:\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003e+0, -0.5dB from 20Hz to 20kHz\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003e+0, -3dB from 10Hz to 70kHz\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"mc-spec-heading\"\u003eControl\u003c\/p\u003e\n\u003cdiv class=\"mc-spec-grid\"\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eRemote Power Control\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eYes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eMulti-Channel DB25 Cable\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eN\/A\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"mc-spec-heading\"\u003eConnectivity\u003c\/p\u003e\n\u003cdiv class=\"mc-spec-grid\"\u003e\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eSpeaker Binding Post Type\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003ePatented Solid Cinch™ Speaker Binding Posts\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cp class=\"mc-spec-heading\"\u003eGeneral Specifications\u003c\/p\u003e\n\u003cdiv class=\"mc-spec-grid\"\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eCircuit Configuration\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eSolid State section: Push-Pull Complementary\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003eVacuum Tube section: Unity Coupled\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eCircuit Design\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eSolid State and Vacuum Tube\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eMono Bridge\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eNo\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eMono Parallel\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eNo\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eOutput Type\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eSolid State section: Autoformer™\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003eVacuum Tube section: Unity Coupled Output Transformer\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eMeters\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eDualView™ Power Output Meter\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eMeter Light Switch\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eYes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eBalanced Input\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003e2 (1 Solid State or Mono, 1 Vacuum Tube)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eFront Panel\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eGlass\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eIllumination\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003eDirect LED\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eChassis Style\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003ePolished stainless steel \u0026amp; black painted steel\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"mc-spec-heading\"\u003eWeights \u0026amp; Dimensions\u003c\/p\u003e\n\u003cdiv class=\"mc-spec-grid\"\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eUnit Dimensions (W x H x D)\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003e17-7\/8\" (45.4cm) x 11-13\/16\" (30cm) x 21-1\/2\" (54.6cm)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eUnit Weight\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003e133 lbs (60.3 kg)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eShipping Weight\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003e159 lbs (72.1 kg)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails id=\"downloads\" class=\"mc-accordion\"\u003e\u003csummary\u003eDownloads\u003c\/summary\u003e\u003cul class=\"mc-downloads\"\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.mcintoshlabs.com\/-\/media\/Files\/mcintoshlabs\/DocumentMaster\/us\/MC451-brochure-35112700.pdf?rev=bcdad6edbd404aea9e9430c494513330\u0026amp;revision=bcdad6ed-bd40-4aea-9e94-30c494513330\"\u003eMC451 Dual Mono Amplifier Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.mcintoshlabs.com\/-\/media\/Files\/mcintoshlabs\/DocumentMaster\/us\/MC451-OM-24118600.pdf?rev=73ea2c396c094e07a5224e31dd4d6756\u0026amp;revision=73ea2c39-6c09-4e07-a522-4e31dd4d6756\"\u003eMC451 Dual Mono Amplifier Owner's Manual\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n.mc-editorial{font-family:inherit;color:inherit;line-height:inherit}\n.mc-section{padding:2.5rem 0;border-top:1px solid rgba(128,128,128,.2)}\n.mc-section:first-child{border-top:none;padding-top:0}\n.mc-section h3{margin:0 0 .75rem;font-size:inherit}\n.mc-section p{margin:0 0 1rem;opacity:.8}\n.mc-section p:last-child{margin-bottom:0}\n.mc-img-block,.mc-video-block{margin:0;padding:0}\n.mc-img-block img,.mc-video-block video{width:100%;height:auto;display:block}\n.mc-video-block video{max-height:600px;object-fit:cover}\n.mc-accordion{border-top:1px solid rgba(128,128,128,.2);margin:0}\n.mc-accordion summary{cursor:pointer;padding:1.25rem 0;list-style:none;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-family:inherit;color:inherit}\n.mc-accordion summary::-webkit-details-marker{display:none}\n.mc-accordion summary::after{content:'+';font-size:1.5rem;font-weight:300;line-height:1}\n.mc-accordion[open] summary::after{content:'−'}\n.mc-spec-body{padding-bottom:1.5rem}\n.mc-spec-heading{font-size:.7em;font-weight:700;text-transform:uppercase;letter-spacing:.08em;opacity:.5;padding:.75rem 0 .25rem;margin:0}\n.mc-spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 2rem;margin:0 0 .5rem}\n.mc-spec-item{padding:.5rem 0;border-bottom:1px solid rgba(128,128,128,.15)}\n.mc-spec-name{margin:0 0 .2rem;font-size:.875em;font-weight:600;opacity:.9}\n.mc-spec-value,.mc-spec-sub{margin:0;font-size:.875em}\n.mc-spec-value{opacity:.8}\n.mc-spec-sub{opacity:.6}\n.mc-downloads{list-style:none;padding:0;margin:0 0 1.5rem}\n.mc-downloads li{padding:.5rem 0;border-bottom:1px solid rgba(128,128,128,.15)}\n.mc-downloads a{color:inherit;text-underline-offset:3px}\n@media(max-width:600px){.mc-spec-grid{grid-template-columns:1fr}}\n\u003c\/style\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":54166339912017,"sku":"MC451","price":16000.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1047\/7178\/0945\/files\/mc451-front-top.jpg?v=1782728438","url":"https:\/\/gridhifi.com\/products\/mcintosh-mc451","provider":"The Grid","version":"1.0","type":"link"}