The MA252 Integrated Amplifier is the first hybrid integrated amplifier from McIntosh.
Taking retro design cues from the legendary McIntosh MC275 Vacuum Tube Amplifier, the MA252 combines the best of vacuum tube and solid state circuit design to create an amplifier that’s both visually and sonically stunning.
- 2-Channel Hybrid Integrated Amplifier
- Hybrid design: vacuum tube preamp and solid state power amp
- 100 Watts into 8 Ohms
- 160 Watts into 4 Ohms
“The McIntosh MA252 offers an alluring combination of tube romanticism and solid-state resolution and authority… The ability to connect the listener to the music makes this tube-solid state integrated a special component by any standard. I could happily listen to the MA252 for a long, long time.” – PartTimeAudiophile
“If you’re looking for a definition of a ‘musical’ sound, the MA252 is it personified.” – Audio Esoterica
The preamplifier stage uses two 12AX7a and two 12AT7 vacuum tubes housed inside stylish protective cages; the output stage is a direct coupled solid state amplifier that delivers 100 Watts per channel into 8 Ohm speakers or 160 Watts per channel into 4 Ohm speakers.
An all analogue design, it comes with 2 unbalanced, 1 balanced and 1 Moving Magnet phono input for turntables.
All 4 inputs can be given user-friendly names in order to simplify user control.
Bass and treble tone controls help fine tune your music to your personal preferences.
A full range subwoofer output is included for use with a powered subwoofer to further enhance low frequencies.
The MA252 features McIntosh Monogrammed Heatsinks™ which are connected to advanced high current output transistors.
These transistors eliminate the typical amplifier warm-up time so that the MA252 is in peak operating condition from the moment it’s turned on.
A powerful control microprocessor is used for smooth system operation, along with some of the latest audio-grade circuit components that deliver the best possible sound.
Thanks to its solid state output, the MA252 is their first product containing vacuum tubes to include their patented Power Guard® technology.
Power Guard monitors the output signal for signs of over driving and makes real time micro adjustments to the input signal to prevent harsh sounding clipping that could potentially damage your speakers.
If Power Guard is activated, the 2 vacuum tubes connected to the affected audio channel(s) will flash an amber color; they will return to their normal green color when the clipping has stopped.
Other McIntosh technologies found in the MA252 include Sentry Monitor™, High Drive headphone amplifier and gold-plated speaker binding posts.
Input selection, bass, treble, tone bypass, balance and input offset levels can be adjusted using the front panel knobs or the included remote control; all settings and input selection will be shown on the OLED display.
The entire unit sits atop a beautiful polished stainless steel chassis with a classic McIntosh-styled die cast aluminum name badge attached to each side.
Specifications McIntosh MA252
Power Output per Channel
100 Watts into 8 Ohms
160 Watts into 4 Ohms
Number of Channels
4 or 8 Ohms
Rated Power Band
20Hz to 20kHz
Total Harmonic Distortion
Frequency Response +0,-0.5dB
20Hz to 20kHz
Frequency Response, +0, -3dB
10Hz to 100kHz
Sensitivity Phono (Moving Coil)
Sensitivity Phono (Moving Magnet)
Sensitivity High Level (Balanced / Unbalanced)
Sensitivity (Power Amp input)
Signal To Noise Ratio (Moving Coil)
Signal To Noise Ratio (Moving Magnet)
Signal To Noise Ratio (High Level)
Signal To Noise Ratio (Power Amp input)
Input Impedance (Balanced / Unbalanced)
8 Ohms: >200
4 Ohms: >100
Maximum Output (Balanced / Unbalanced)
Phono Input Moving Coil
Phono Input Moving Magnet
1 (fixed loading)
Upgradeable Digital Audio Module
Digital Coaxial Input
Digital Optical Input
Digital MCT (DIN) Input
Digital USB Input
HDMI (ARC) Input
Balanced Variable Output
Unbalanced Fixed Output
Unbalanced Variable Output
1/4″ High Drive
AM/FM Tuner option
Home Theater PassThru
Unbalanced Analog Connector Type
Speaker Binding Post Type
DIGITAL AUDIO SPECIFICATIONS
Digital-to-Analog Converter (DAC) Type
Digital Coaxial Input Sample Rate
Digital Optical Input Sample Rate
Digital MCT (DIN) Input Sample Rate
Digital USB Input Sample Rate
Bass and Treble
Tone Bypass and Input Assign
RS232 Control Input
Power Control Output
Rear Panel Data Port
Rear Panel IR Sensor Input
Input Level Match
Vacuum Tube or Solid State
Preamplifier: Vacuum Tube
Power Amplifier: Solid State
Dual Layer Chassis
Polished stainless steel
McIntosh Monogrammed Heatsinks™
120V 50/60Hz, 3.7A
Standby Power Requirement
WEIGHTS & DIMENSIONS
Unit Dimensions (W x H x D)
12″ (30.5cm) x 7-5/8″ (19.4cm) x 16-1/2″ (41.9cm)
28 lbs (12.7 kg)
37 lbs (16.8 kg)