Tube integrated amplifier for high-quality 2-channel systems

The McIntosh MA2375 AC is designed as a tube integrated amplifier for 2-channel Hi-Fi systems. It combines a tube preamplifier and a tube power amplifier in one chassis, maintaining a completely analog design. This means that the MA2375 processes incoming audio signals without digital signal processing. Analog sources can be connected directly. For digital sources or streamers without analog outputs, an upstream D/A converter is required. This makes it particularly suitable for systems where musical directness, high-quality craftsmanship, and a consciously reduced signal path are paramount.

Variety of analog connections including phono

Multiple inputs are available for analog sources, including balanced and unbalanced connections, as well as a configurable phono input for Moving Magnet and Moving Coil cartridges. This allows turntables to be integrated directly. The features are complemented by a subwoofer output and a preamplifier output for extended system concepts.

Sound tuning according to room and taste

The integrated analog equalizer enables precise sound adjustment. This allows playback to be adapted to the room, speakers, and personal listening habits, without sacrificing the amplifier's analog character. For headphone use, a High-Drive headphone amplifier with Headphone Crossfeed Director is available.

Protection technology for the tubes

The MA2375 AC uses Power Guard Screen Grid Sensor and Sentry Monitor. These protection circuits monitor operation and help protect tubes and the amplifier.

Operating options

Operation is done directly on the device via the input selector, volume control, and tone controls on the front. The information display shows input, volume, and trim and setup menus. A remote control is also included. For integration into larger systems, Power Control, Data Ports, Home Theater PassThru, an external IR input, and RS232 control are available, among other features.

Design with clear McIntosh signature

The polished stainless steel chassis, visible tubes, and blue Power Meters characterize the appearance of the MA2375 AC. The amplifier thus appears not only technically high-quality but also deliberately classic. The design makes it a visible centerpiece of a sophisticated Hi-Fi system.

Pros and Cons at a Glance

Reasons to choose the McIntosh MA2375 AC:

• Completely analog tube integrated amplifier
• Tube preamplifier and tube power amplifier in one device
• Configurable phono input for MM and MC cartridges
• Analog equalizer for sound tuning
• Subwoofer output and preamplifier output for extended systems
• High-Drive headphone output with HXD
• Power Guard Screen Grid Sensor and Sentry Monitor
• Classic McIntosh design with visible tubes and blue Power Meters

Things to consider with the McIntosh MA2375 AC:

• Exclusively analog design, no digital inputs available
• Due to size and weight, the placement location should be carefully planned (we will gladly assist with this)
• Sufficient ventilation requires adherence to specified clearances

Specifications

General

• Product type: Tube integrated amplifier
• Channels: 2
• Design: fully analog
• Tube complement power amplifier: four KT88 output tubes and four 12AT7 driver tubes
• Tube complement preamplifier: two 12AX7A and two 12AT7 preamplifier tubes
• Output type: Unity Coupled output transformer
• Chassis finish: polished stainless steel
• Level meters: yes
• Dual Layer chassis: yes
• Dimensions W × H × D: 45.2 × 25.2 × 51.9 cm
• Weight: 42.2 kg
• Shipping weight: 46.7 kg

Audio

• Rated power (FTC): 75 W
• Output power per channel: 75 W into 4, 8 or 16 ohms
• Rated power bandwidth: 20 Hz to 20 kHz
• Total Harmonic Distortion (THD): maximum 0.5% when operating both channels from 250 milliwatts to rated power, 20 Hz to 20 kHz
• Dynamic Headroom: 1.2 dB
• Frequency response +0, -0.5 dB: 20 Hz to 20 kHz
• Frequency response +0, -3 dB: 10 Hz to 50 kHz
• Damping factor: >22
• Input sensitivity Phono: 3 mV
• Input sensitivity High Level (balanced / unbalanced): 600 mV / 300 mV
• Signal-to-Noise Ratio (S/N) Moving Coil: 75 dB
• Signal-to-Noise Ratio (S/N) Moving Magnet: 75 dB
• Signal-to-Noise Ratio (S/N) High Level: 95 dB
• Input impedance (balanced / unbalanced): 44 kOhm / 22 kOhm
• Phono adjustment: 100 to 47 kOhm; 50 to 400 pF
• Maximum output level (balanced / unbalanced): 16 V / 8 V

Connections

• Balanced inputs (XLR): 2
• Unbalanced inputs (RCA): 3
• Phono input (Universal): 1, configurable for Moving Coil (MC) or Moving Magnet (MM)
• Digital Coaxial inputs: 0
• Digital Optical inputs: 0
• Digital MCT inputs: 0
• Digital USB input: 0
• HDMI ARC input: 0
• Balanced audio output (variable): 0
• Unbalanced audio output (fixed level): 0
• Unbalanced audio output (variable): 1
• Headphone output: 6.35 mm High Drive with Headphone Crossfeed Director (HXD)
• Subwoofer outputs: 1
• FM/AM tuner option: no
• Home Theater PassThru: yes
• Unbalanced analog connections: Premium version made of gold-plated solid brass
• Speaker terminals: patented Solid Cinch speaker terminals
• Service interface: 1

Control and Features

• Tone control: 5-band equalizer
• Tone control bypass and input assignment: yes
• RS232 control inputs: yes
• Power Control outputs: 1
• Rear Data Ports: 2
• Rear IR sensor inputs: yes
• Input level adjustment: yes
• Power Control: yes
• Data Ports: yes
• External IR input: yes
• Auto Off: present
• Display Auto Off: present
• Level meter illumination: switchable on and off
• Tube illumination: switchable on and off

Power Supply

• Power consumption in standby: <0.25 W
• Mains voltage: 120 V, 50/60 Hz, 3.6 A.

Scope of delivery

• McIntosh MA2375
• Metal tube cover
• Power cable
• Documents

• Anleitung
• Broschüre