Page 2 of MA2275 Integrated Amplifier by McIntosh Laboratory, Inc.

mcintosh laboratory inc 2 chambers street binghamton new york 13903-2699 tel 607 723-3512 · us toll-free 800 538-6576 · fax 607 724-0549 · www.mcintoshlabs.com for the consumer s protection in order to ensure the highest level of customer satisfaction new mcintosh products may only be purchased over-the-counter or delivered and installed by an authorized mcintosh dealer mcintosh products that are purchased over the internet by phone or mail order are presumed to be used and do not qualify for any mcintosh warranty mcintosh does not warrant in any way products that are purchased from anyone who is not an authorized dealer or products that have had their serial number altered or defaced ma2275 vacuum tube integrated amplifier flexibility 6 sets of unbalanced inputs main preamp-out/amp-in connection and one additional set of switched preamp outputs are included phono input the ultra-quiet mcintosh phono stage for moving magnet cartridges is built-in if desired this input may be changed to aux high-level inputs full power delivery the ma2275 delivers 75 watts per channel into 2 4 and 8-ohm speakers ultra low noise and distortion distortion-canceling properties of mcintosh s unity-coupled output circuit and unique output transformer design yield much lower distortion and noise across the entire 20-20,000hz music range wide bandwidth mcintosh s exclusive output circuit and transformer designs ensure ultra-wide frequency bandwidth inverted chassis heat producing tubes are placed on top under a protective cage while other circuits are shielded by a beautiful polished stainless steel chassis power output minimum sine wave continuous average power output per channel both channels operating is 75 watts into 2 4 or 8-ohm loads rated power band 20hz to 20khz total harmonic distortion 0.5 max at any level from 250 milliwatts to rated power output per channel from 20hz to 20khz frequency response +0 -0.5db from 20hz to 20khz +0 -3db from 10hz to 50khz sensitivity high level 250mv for 2.5v rated output 50mv ihf phono 2.5mv for 2.5v rated output 0.5mv ihf power amplifier input 2.5v for rated output a-weighted signal-to-noise ratio high level 93db below rated output phono input 80db below 10mv input power amp 100db below rated output intermodulation distortion smpte 0.5 max if instantaneous peak power does not exceed 150w per channel input impedance high level 22k ohms phono 47k ohms 65pf maximum input signal high level 8v phono 90mv maximum preamp voltage output high level 8v phono 8v main out 8v at preamp output voltage gain high level to tape 0db high level to main 15db power requirements 120v 50/60hz 3.6 amps preamp tube compliment 2 ­ 12ax7a phono circuitry 2 ­ 12ax7a high level circuitry power amp tube compliment 2 ­ 12at7 4 ­ kt88/6550 overall dimensions h xwxd including knobs and feet 10-1/8 25.7cm x 17-3/4 45cm x 18-3/4 47.6cm weight 77 lbs 35kg net 110 lbs 50kg boxed 2 x 75 watts 8/4/2 ohms all signal amplification by vacuum tubes wide power bandwidth with ultra-low distortion illuminated peak-responding wattmeters switchable meter illumination tape loop in/out provided gold plated input output connectors noise and transient-free turn-on/turn-off high-performance headphone output dual preamp outputs switched data output ports external remote sensor jack 11.04.ma2275.20k 35006100

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