Description
The 7270 is by FAR one of our favorite vintage amps from McIntosh. Aesthetically it meets all the requirements - large chassis, big blue meters, glass/metal faceplate, and BIG power. This particular sample is in great shape and passed all of our internal tests with ease. This amplifier will ship to you with an official no name on box to protect contents. McIntosh Shipping Carton (double-ply and double-boxed) with its original manual. McIntosh MC7270 Owner's Manual Stereophile MC7270 Review from 1987 The Amplifier has been bench recently tested to meet all original Mcintosh Company Specs for factory operation. Specifications from McIntosh: PERFORMANCE GUARANTEE Performance Limits are the maximum deviation from perfection permitted for a Mclntosh instrument. We promise you that when you purchase a new MC 7270 from a Mclntosh franchised dealer, it will be capable of or can be made capable of performance at or exceeding these limits or you can return the unit and get your money back. Mclntosh is the only manufacturer that makes this statement. Very unique quality that McIntosh offers power guard protection protects speakers and amp from overloading or blowing speakers or amp automatically shuts down if sense power overload! PERFORMANCE Mclntosh audio power ratings are in accordance with the Federal Trade Commission Regulation of November 4, 1974 concerning power output claims for amplifiers used in home entertainment products. POWER OUTPUT STEREO 270 watts minimum sine wave continuous average power output, per channel, both channels operating into 1 ohm, 2 ohms, 4 ohms, or 8 ohms load impedance, which is: 16.4 volts RMS across 1 ohm 23.2 volts RMS across 2 ohms 32.9 volts RMS across 4 ohms 46.5 volts RMS across 8 ohms MONO-BRIDGE 540 watts minimum sine wave continuous average power output into 2 ohms, 4 ohms, 8 ohms, or 16 ohms load impedance, which is: 32.9 volts RMS across 2 ohms 46.5 volts RMS across 4 ohms 65.7 volts RMS across 8 ohms 93.0 volts RMS across 16 ohms OUTPUT LOAD IMPEDANCE STEREO 1 ohm, 2 ohms, 4 ohms, and 8 ohms; separate terminals are provided for each output. MONO-BRIDGED 2 ohms, 4 ohms, 8 ohms, or 16 ohms, balanced to ground. RATED POWER BAND 20 Hz to 20,000 Hz TOTAL HARMONIC DISTORTION STEREO 0.02% maximum harmonic distortion at any power level from 250 milliwatts to 270 watts per channel from 20 Hz to 20,000 Hz, both channels operating. MONO 0.02% maximum harmonic distortion at any power level from 250 milliwatts to 540 watts from 20 Hz to 20,000 Hz. INTERMODULATION DISTORTION STEREO 0.02% maximum if instantaneous peak power output is 540 watts or less per channel with both channels operating for any combination of frequencies, 20 Hz to 20,000 Hz, MONO 0.02% maximum if instantaneous peak power output is 1080 watts or less for any combination of frequencies, 20 Hz to 20,000 Hz. FREQUENCY RESPONSE (AT ONE WATT OUTPUT) 20 Hz to 20,000 Hz +0 -0.25 dB. 10 Hz to 100,00 Hz +0 - 2 dB. NOISE AND HUM 100 dB below rated output. RATINGS DAMPING FACTOR Greater than 30 INPUT IMPEDANCE 20,000 ohms. INPUT SENSITIVITY Switchable: 0.75 volt or 2.5 volts-level control provided for higher input voltages. POWER GUARD Clipping is prevented and THD does not exceed 2% with up to 20 dB overdrive a 1 kHz. GENERAL INFORMATION POWER REQUIREMENTS 120 volts 50/60 Hz; 13 amps. SEMICONDUCTOR COMPLEMENT 79 silicon transistors 31 silicon rectifiers and diodes 7 integrated circuits MECHANICAL INFORMATION SIZE 16 3/16 inches wide (41.1 cm) by 7 1/8 inches high (18.1 cm) by 14 1/2 inches deep (36.8 cm), including connectors. Knob clearance required is 1 1/4 inches (3.2 cm) in front of mounting panel. FINISH The front panel is a combination of glass and black anodized aluminum. The chassis is black. WEIGHT 82 pounds (37.2 kg) net, 96 pounds (43.5 kg) in shipping carton.On Apr-06-24 at 20:03:10 PDT, seller added the following information: Condition of this McIntosh Amp is like new no blemishes to the unit as seen in photos. Will provide proof of bench test results which states Amp meets all the original specifications and performance.
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