{"product_id":"mcintosh-mc402-solid-state-amplifier-400w-fiber-optic","title":"McIntosh MC402 Solid State Amplifier 400W - Fiber Optic","description":"\u003cp\u003e\u003cb\u003eGeneral:\u003c\/b\u003e\u003cbr\u003eThe MC-402 is the predecessor to the MC-462, and just about as capable. Featuring 400W per channel it’s capable of driving just about any load. A new MC-462 will set you back $11,500 so this is a great chance to pick of an amp just as nice for a significant discount. \u003cbr\u003e\u003cbr\u003eWe especially like it paired to B\u0026amp;W 800 series speakers, and just about every other large full range speaker. The sheer power of this amp means that it will pair with low sensitivity speakers well.\u003cbr\u003e\u003cbr\u003eKey McIntosh features include use of McIntosh Autoformers, one of the company's signature technologies. Autoformers allow the amplifier to deliver its full 400 watts of output into 2-, 4-, or 8-ohm speaker loads. This feature is reserved for McIntosh's higher-end amplifiers.\u003cbr\u003e\u003cbr\u003eIt also incorporates Power Guard and Sentry Monitor protection circuits. Power Guard helps prevent audible clipping by automatically reducing input drive when necessary, while Sentry Monitor provides fuse-free short-circuit protection that automatically resets once normal operating conditions return.\u003cbr\u003e\u003cbr\u003eAnother really cool feature of McIntosh units from this era is their coveted fiber-optic lighting. Compared to the other lighting methods used in McIntosh equipment, the fiber-optic system offers the most even illumination, creating a consistent, uniform glow across the entire front panel (especially the VU meters) that many enthusiasts consider the most attractive.\u003cbr\u003e\u003cbr\u003eIt will ship for free in the continental US with fright to ensure safe transport. We have ordered a new and super strong double box with plywood reinforcement from McIntosh (which is pretty expensive), but is the only way to ensure this heavy weight amp will arrive safely. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cb\u003eSkyFi Cosmetic Notes:\u003c\/b\u003e\u003cbr\u003eThere is a very light mark on one of the metal trim pieces on the 3D section of the faceplate. This amp is also from a production era where the white silk screened lettering is easily damaged. Some of the lettering near the IEC power inlet is missing.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eBrand Background:\u003c\/b\u003e\u003cbr\u003eMcIntosh Laboratory is an American manufacturer of handcrafted high-end audio equipment based in Binghamton, New York. The company was founded in 1949 by Frank McIntosh. The company designs and produces audio amplifiers, stereo tuners and other consumer electronics products.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eOwnership:\u003c\/b\u003e\u003cbr\u003eSecond Owner\u003cbr\u003e\u003cbr\u003e\u003cb\u003eConnections:\u003c\/b\u003e\u003cbr\u003eXLR, RCA, IEC Power, 5 way binding posts\u003cbr\u003e\u003cbr\u003e\u003cb\u003eGeneral Sound:\u003c\/b\u003e\u003cbr\u003eSmooth, uncolored, undistorted natural and clean\u003cbr\u003e\u003cbr\u003e\u003cb\u003eCosmetic Condition:\u003c\/b\u003e\u003cbr\u003e8\/10 = Very Good. Excellent front faceplate, one minor flaw on chassis side or top. See our detailed rating description \u003ca href=\"https:\/\/skyfiaudio.com\/pages\/our-rating-scale\" target=\"_blank\"\u003ehere\u003c\/a\u003e.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eWorking Condition:\u003c\/b\u003e\u003cbr\u003eWorking perfectly and tested in our lab and listening room.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eIncluded:\u003c\/b\u003e\u003cbr\u003eUnit, box , Power Cord\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePacking:\u003c\/b\u003e\u003cbr\u003eOriginal Manufacturers Packing\u003cbr\u003e\u003cbr\u003e\u003cb\u003eSpecs:\u003c\/b\u003e\u003cbr\u003e- Power Output: 400 watts per channel into stereo (2, 4, or 8 ohms) or 800 watts in mono.\u003cbr\u003e- Frequency Response: 20Hz to 20kHz (+0, -0.25dB).\u003cbr\u003e- Total Harmonic Distortion (THD): 0.005% max at any power level from 250 milliwatts to rated power.\u003cbr\u003e- Signal-to-Noise Ratio (A-Weighted): 94dB (unbalanced), 98dB (balanced).\u003cbr\u003e- Input Impedance: 10,000 ohms (unbalanced), 20,000 ohms (balanced).\u003cbr\u003e- Input Sensitivity: 2.0V (unbalanced), 4.0V (balanced).\u003cbr\u003e- Damping Factor: Greater than 40 (wide band).\u003cbr\u003e- Dynamic Headroom: 2.1dB\u003cbr\u003e\u003cbr\u003e\u003cb\u003eDimensions:\u003c\/b\u003e\u003cbr\u003e9-7\/16 inches (23.97 cm) x 17-1\/2 inches (44.45 cm) x 20 inches (50.8 cm)\u003cbr\u003e\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e\u003cbr\u003e110 lbs.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eApproximate Age:\u003c\/b\u003e\u003cbr\u003e2002\u003cbr\u003e\u003cbr\u003e\u003cb\u003eRecommended Cables:\u003c\/b\u003e\u003cbr\u003e\u003ca href=\"https:\/\/skyfiaudio.com\/products\/kimber-kable-hero-interconnects-pair-rca-ultraplate-or-wbt-connectors-new\" rel=\"noopener\" target=\"_blank\"\u003eKimber Kable - RCA Interconnects\u003c\/a\u003e - Better\u003cbr\u003e\u003cbr\u003e\u003ca href=\"https:\/\/skyfiaudio.com\/products\/kimber-kable-silver-streak-interconnects-pair-rca-ultraplate-or-wbt-connectors\" rel=\"noopener\" target=\"_blank\"\u003eKimber Kable - RCA Interconnects\u003c\/a\u003e - Best\u003cbr\u003e\u003cbr\u003e\u003ca href=\"https:\/\/skyfiaudio.com\/collections\/our-kimber-kable-collection\/products\/kimber-kable-ascent-series-hero-analog-interconnects-pair-balanced-xlr-connectors-new\" rel=\"noopener\" target=\"_blank\"\u003eKimber Kable - BALANCED XLR Connectors\u003c\/a\u003e - Better\u003cbr\u003e\u003cbr\u003e\u003ca href=\"https:\/\/skyfiaudio.com\/collections\/our-kimber-kable-collection\/products\/kimber-kable-summit-series-silver-streak-analog-interconnects-pair-balanced-xlr-connectors-new\" rel=\"noopener\" target=\"_blank\"\u003eKimber Kable - BALANCED XLR Connectors\u003c\/a\u003e - Best\u003cbr\u003e\u003cbr\u003e\u003ca href=\"https:\/\/skyfiaudio.com\/products\/kimber-kable-8tc-8-tc-ascent-speaker-cables-pair-new\" rel=\"noopener\" target=\"_blank\"\u003eKimber Kable - Speaker Cables\u003c\/a\u003e - Better\u003cbr\u003e\u003cbr\u003e\u003ca href=\"https:\/\/skyfiaudio.com\/products\/kimber-kable-summit-series-monocle-xl-speaker-cables-pair-new\" rel=\"noopener\" target=\"_blank\"\u003eKimber Summit Series Monocle XL Speaker Cables (PAIR)\u003c\/a\u003e - Best\u003cbr\u003e\u003cbr\u003e\u003ca href=\"https:\/\/skyfiaudio.com\/products\/kimber-kable-pk14-pk-14-ascent-power-cord-brand-new\" rel=\"noopener\" target=\"_blank\"\u003eKimber Kable - Power Cords\u003c\/a\u003e - Better\u003cbr\u003e\u003cbr\u003e\u003ca href=\"https:\/\/skyfiaudio.com\/products\/kimber-kable-ascent-series-pk10-pk-10-power-cord-brand-new\" rel=\"noopener\" target=\"_blank\"\u003eKimber Kable - Power Cords\u003c\/a\u003e - Best\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTesting Process:\u003c\/b\u003e\u003cbr\u003eWe start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect the PCBs for discoloration from resistors or transistors that may have been running hot. On vintage units we often spot check select capacitors for value and ESR.\u003cbr\u003e\u003cbr\u003eIf the amplifier passes visual inspection, we move on to a controlled power on sequence using a Sencore safety analyzer to monitor current draw in real time. Once the amplifier is determined to be safe to operate, we connect it to full AC mains for function and power testing. We connect the speaker outputs of the amplifier to a Sencore PA81 Power Analyzer which acts as a dummy load, DC offset monitor, and oscilloscope interface. We start with a low level 1 KHz test signal at the amplifier's input and slowly increase its amplitude while monitoring the output on an oscilloscope for signs of noise, clipping, distortion, or improper channel balance. We continue increasing the signal level until the amplifier reaches clipping. \u003cbr\u003e\u003cbr\u003eAt this point we take an output power measurement and compare it to the spec sheet of the amplifier to verify proper performance. If the device under test has both balanced and single ended inputs they are both tested at this time.\u003cbr\u003e\u003cbr\u003eWe finish off the bench evaluation with a 1 KHz square wave check and a 20 Hz to 20 KHz sine sweep to assess the amplifier's frequency response characteristics. \u003cbr\u003e\u003cbr\u003eThis battery of tests will usually reveal if the amplifier has any issues that need further attention.\u003cbr\u003e\u003cbr\u003eBefore the device leaves the bench, we perform a listening test with actual music using a variety of preferred test tracks. Our benches are outfitted with familiar monitor speakers which help us identify inconsistencies that will not always show up on our test gear. The main things that we are listening for are hum or noise with no signal present, proper center image, clicks, pops, or any other obvious undesirable audio characteristics.\u003cbr\u003e\u003cbr\u003eIf the unit passes all of these tests it is moved to our long term testing rig where we simulate real word operating conditions for 6-8 hours minimum. This allows us to monitor the unit for signs of thermal runaway or intermittent issues that only crop up when the unit has fully come up to temperature.\u003c\/p\u003e","brand":"McIntosh","offers":[{"title":"Default Title","offer_id":48841193816318,"sku":"107952","price":9213.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0003\/3275\/9084\/files\/mcintosh-mc402-solid-state-amplifier-400w-fiber-optic-806.jpg?v=1788208099","url":"https:\/\/skyfiaudio.com\/en-au\/products\/mcintosh-mc402-solid-state-amplifier-400w-fiber-optic","provider":"SkyFi Audio","version":"1.0","type":"link"}