McIntosh MA2275 User manual

MA2275
Tube Integrated Amplifier
Promotional Highlights
• 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
• IR Remote Control
• Switched Data Output Ports
• Front Panel Headphone Jack
• Tube Saver Auto Turn-On Delay
Signal-To-Noise Ratio A-Weighted:
Phono Input: 80dB below 10mV input
High Level: 93dB below rated output
Power Amp: 100dB below rated output
Input Impedance: Phono: 47k ohms, 65pF
High: Level, 22k ohms
Maximum Input Signal: Phono: 90mV; High
Level: 8V
Preamp Maximum Voltage Output: Phono: 8V;
High Level; 8V; Main Out; 8V at preamp output.
Power Requirements: 120Volts, 50/60Hz at 3.6
amps
Preamplifier Tube Compliment:
2 – 12AX7A Phono Circuitry
2 – 12AX7A High Level Circuitry
Power Amplifier Tube Compliment:
2 – 12AT7; 4 – KT88/6550
Overall Dimensions (H x W x D): 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
Performance Features
Power Output: 75W per channel into 2, 4, or 8
ohm load is the minimum sine wave continuous
average power output per channel, both channels
operating.
Rated Power Band: 20Hz to 20kHz
Total Harmonic Distortion: 0.5% max harmonic
distortion at any level from 250 milliwatts to rated
power output.
Frequency Response: +0, -0.5dB from 20Hz to
20kHz; +0, -3dB from 10Hz to 50kHz
Sensitivity: Phono: 2.5mV for 2.5V rated output
(0.5mV IHF); High Level: 250mV for 2.5V rated
output (50mV IHF); Power Amplifier Input: 2.5V
for rated output.
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!
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