{"product_id":"mcintosh-mi254-4-channel-power-amplifier","title":"McIntosh MI254 4-Channel Power Amplifier","description":"\u003ch1\u003eMcIntosh MI254 4-Channel Power Amplifier\u003c\/h1\u003e\n\n\u003ch3\u003e250 Wpc into 8 ohms, 300 Wpc into 4 ohms, with balanced inputs, dual Watt Meters, and bussable inputs\u003c\/h3\u003e\n\n\u003cp\u003eThe McIntosh MI254 is a flexible 4-channel amplifier for distributed audio, home theater, and stereo systems. It delivers 250 W per channel into 8 ohms or 300 W per channel into 4 ohms using closed-loop digital switching amplifiers and robust power supplies.\u003c\/p\u003e\n\n\u003cp\u003eIts compact 2U chassis can be rack mounted using the included removable mounting ears or used as a conventional standalone component. The highly efficient class D design requires no cooling fans during normal operation, making it well suited to equipment racks and dedicated installation spaces.\u003c\/p\u003e\n\n\u003cp\u003eTwo blue McIntosh Watt Meters display the summed output of channels 1 + 2 and channels 3 + 4, while multicolor LED indicators show individual channel status. Each channel has balanced and unbalanced inputs and a 5-way speaker binding post, while BUS inputs and outputs simplify distributing a stereo signal across multiple channels or amplifiers.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e250 W per channel into 8 ohms\u003c\/li\u003e\n\u003cli\u003e300 W per channel into 4 ohms\u003c\/li\u003e\n\u003cli\u003eClosed-loop digital switching amplifier design\u003c\/li\u003e\n\u003cli\u003eBalanced and unbalanced inputs for each channel\u003c\/li\u003e\n\u003cli\u003eDual blue McIntosh Watt Meters\u003c\/li\u003e\n\u003cli\u003eBUS inputs and outputs\u003c\/li\u003e\n\u003cli\u003ePower Guard® signal overload protection\u003c\/li\u003e\n\u003cli\u003eSentry Monitor™ short-circuit protection\u003c\/li\u003e\n\u003cli\u003ePower Control 12 V triggering\u003c\/li\u003e\n\u003cli\u003eAutomatic on\/off signal sensing\u003c\/li\u003e\n\u003cli\u003eFanless operation\u003c\/li\u003e\n\u003cli\u003e2U rack mounting with removable ears\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\n\u003cp\u003e\u003cb\u003ePower Output:\u003c\/b\u003e 250 W per channel into 8 ohms; 300 W per channel into 4 ohms\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eNumber of Channels:\u003c\/b\u003e 4\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTotal Harmonic Distortion:\u003c\/b\u003e 0.025%\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSignal-to-Noise Ratio:\u003c\/b\u003e 100 dB below rated output\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDynamic Headroom:\u003c\/b\u003e 2.5 dB into 8 ohms; 3.5 dB into 4 ohms\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDamping Factor:\u003c\/b\u003e \u0026gt;85 into 8 ohms; \u0026gt;45 into 4 ohms\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eRated Power Band:\u003c\/b\u003e 20 Hz–20 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFrequency Response:\u003c\/b\u003e +0, -0.9 dB from 20 Hz–20 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eCircuit Configuration:\u003c\/b\u003e Closed-loop digital switching\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOutput Type:\u003c\/b\u003e Direct coupled\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eBalanced Inputs:\u003c\/b\u003e 4\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSpeaker Connections:\u003c\/b\u003e 5-way binding posts\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDimensions (H × W × D):\u003c\/b\u003e 4-5\/16\" × 17-1\/2\" × 21\" (110 × 445 × 533 mm)\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWeight:\u003c\/b\u003e 23.5 lb. (10.7 kg)\u003c\/p\u003e","brand":"McIntosh Labs","offers":[{"title":"Default Title","offer_id":54132940177592,"sku":"MI254","price":6000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/files\/MI254FrontTopearshires.jpg?v=1792436652","url":"https:\/\/upscaleaudio.com\/products\/mcintosh-mi254-4-channel-power-amplifier","provider":"Upscale Audio","version":"1.0","type":"link"}