{"product_id":"mcintosh-mi128","title":"MI128 8-Channel Power Amplifier","description":"\u003cdiv class=\"mc-editorial\"\u003e\n\u003csection id=\"overview\" class=\"mc-section\"\u003e\u003cp\u003eThe versatile MI128 8-Channel Digital Amplifier can be used in many applications ranging from distributed audio to home theater to stereo listening. It delivers 120 Watts into 8 Ohm speakers or 150 Watts into 4 Ohm speakers via highly sophisticated closed loop digital switching amplifiers that are paired with extremely robust power supplies to produce performance levels that are rarely achieved in distributed audio.\u003c\/p\u003e\n\u003cp\u003eIt has installer-friendly physical dimensions and is 2U rack mountable via the included mounting ears (the mounting ears are removable for non-rack installations). As a highly efficient Class D amplifier, it does not require noisy cooling fans to maintain nominal operating temperature.\u003c\/p\u003e\n\u003cp\u003eOn the front panel, multi-color LED indicators display the status of each channel. On the back are unbalanced inputs for each channel plus 2-pole Phoenix style push-in speaker terminals. Also located on the back are volume controls for volume balancing, along with 2 digital audio inputs (either coax or optical) that can be bussed, and channel summing circuits for easy mono signal distribution.\u003c\/p\u003e\n\u003cp\u003eOther features included on the MI128 are: Power Guard® signal overload technology that prevents overdriving the speakers; our Sentry Monitor™ short-circuit protection circuit that disengages the output stage before current exceeds safe operating levels and then resets automatically when operating conditions return to normal; BUS input \u0026amp; outputs to easily distribute a stereo signal to multiple outputs and\/or multiple amplifiers; individual channel inputs; 12 Volt triggering capabilities; and eco-friendly on\/off signal sensing that turns the unit off if no input signal has been detected for a set amount of time or automatically turns the amp on when it senses a signal.\u003c\/p\u003e\n\u003cp\u003eThe MI128 includes many McIntosh design cues including a black glass front panel housing an illuminated McIntosh logo, along with a familiar form factor that is highlighted with silver trim. Contact your local dealerto learn more about integrating the MI128 into your custom audio installation.\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\"\u003e120 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\"\u003e120 W into 8 ohms\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003e150 W into 4 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\"\u003e8\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\"\u003e0.05%\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\"\u003e95dB\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\"\u003e8 ohms: 2.1dB\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003e4 ohms: 3.3dB\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\"\u003e8 ohms: \u0026gt;65\u003c\/p\u003e\n\u003cp class=\"mc-spec-sub\"\u003e4 ohms: \u0026gt;32\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\"\u003e20Hz 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\"\u003e+0, -0.5dB from 20Hz to 20kHz\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\"\u003e2-pole Phoenix style push-in speaker terminals\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\"\u003eClosed loop digital switching\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\"\u003eDigital\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\"\u003eN\/A\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\"\u003eN\/A\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\"\u003eDirect Coupled\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\"\u003eNo\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\"\u003eNo\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\"\u003e0\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 with removable rack mounting ears\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\"\u003eBlack painted steel\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mc-spec-item\"\u003e\n\u003cp class=\"mc-spec-name\"\u003eBTU Rating\u003c\/p\u003e\n\u003cp class=\"mc-spec-value\"\u003e1000 BTU\/h\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\"\u003e17-1\/2\" (44.45cm) (19\" (48.3cm with mounting ears)) x 4-5\/16\" (11cm) (including feet) x 21\" (53.3cm) (including front panel and cables)\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\"\u003e22 lbs (10 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\"\u003e38.4 lbs (17.4 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\/MI128-brochure-35108500.pdf?rev=f1e040cefec442cbbc4853d8b10cb63b\u0026amp;revision=f1e040ce-fec4-42cb-bc48-53d8b10cb63b\"\u003eMI128 Power Amplifier Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.mcintoshlabs.com\/-\/media\/Files\/mcintoshlabs\/DocumentMaster\/us\/mi128om-01.pdf?rev=39d8b28f36a7497aaf6cb89c7c1a2ac7\u0026amp;revision=39d8b28f-36a7-497a-af6c-b89c7c1a2ac7\"\u003eMI128 Power Amplifier Owner's Manual\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.mcintoshlabs.com\/-\/media\/Files\/mcintoshlabs\/DocumentMaster\/us\/mi128rp_cd1_2_3-01.pdf?rev=52bad70f9daa40379115bf6e742d072d\u0026amp;revision=52bad70f-9daa-4037-9115-bf6e742d072d\"\u003eMI128 Power Amplifier Connection Diagram\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 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