• Vacuum Tube Design
• 6 Input Program Source selections, 5 Unbalanced and
1 Balanced or Unbalanced
• Tape Recorder Loop
• Unique McIntosh Unity Coupled Output Circuit and
Output Transformers for 2, 4, and 8 ohm speakers.
• Electro Magnetic Input Switching
• Illuminated Output Wattmeters
• Gold Plated Input and Output Connectors
• Low Noise 1% Metal Film Resistors Used
Throughout
• IR Remote Control
• Switched Data Output Ports
• Two Power ON Control Triggers
• Front Panel Headphone Jack
• Tube Saver Auto Turn-On Delay
Promotional Highlights
Performance Features Preamp Section:
Maximum Voltage Output: 8.0VRMS at preamp
and tape/record outputs
Total Harmonic Distortion: 0.08% Max from
20Hz to20kHz
Sensitivity: Phono: 4.5mV for 2.5V out @ 1kHz;
High Level: 450mV for 2.5V out
Signal-To-Noise Ratio A-Weighted:
Phono: 80dB; High Level: 93dB
Input Impedance: Phono, Moving Magnet: 47k
ohms, 65pf; High Level: Unbalanced 22k ohms
Power Output: 75W per channel into 2, 4, or 8 ohm
load is the minimum sine wave continuous average
power output. The output RMS voltage is:
12.2V across 2 ohms; 17.3V across 4 ohms and
24.5V across 8 ohms
Total Harmonic Distortion: 0.5% max harmonic
distortion at any level from 250 milliwatts to rated
power output.
Signal-To-Noise Ratio A-Weighted: 100dB Below
rated output.
Output Load Impedance: 2, 4, and 8 ohms Stereo
Input Impedance: 22k ohms unbalanced
Power Requirements: 120V, 50/60Hz 5 amps
Performance Features Amp Section:
McIntosh Laboratory, Inc.
2 Chambers St.
Binghamton, NY 13903-2699
www.mcintoshlabs.com
Handcrafted with pride in the United States by dedicated, highly trained craftspeople.
For more information on the MA2275 Tube Integrated Amp and other McIntosh
equipment contact your nearest Authorized McIntosh Dealer!
12/03
MA2275
Tube Integrated Amplifier
~ Preliminary Info ~
Frequency Response: +0, -0.5dB from 20Hz to
20kHz
Rated Output: 2.5VRMS at preamp outputs
Output Source Impedance: 250 ohms unbalanced
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