The MA352 Integrated Amplifier is a hybrid design that combines the finest of vacuum tube and solid state audio design principles. The result is an eye-catching amplifier that enjoys the best of these two opposing audio philosophies all while reproducing music at the highest quality level.

An all analog design, the MA352 has a vacuum tube preamplifier section that is powered by a pair of 12AX7A and a pair of 12AT7 vacuum tubes; its output stage is a direct coupled solid state amplifier that outputs 200 Watts per channel into 8 Ohm speakers or 320 Watts per channel into 4 Ohm speakers – enough power to properly drive virtually any set of loudspeakers. Dual scale blue Watt meters give an accurate readout of power output for both speaker impedances.

The MA352 has 2 balanced and 3 unbalanced inputs plus 1 Moving Magnet phono input with adjustable loading for connecting a turntable. It has gold-plated speaker binding posts to help prevent corrosion and ensure a quality signal is sent over your speaker cables to your speakers. A stereo preamplifier output is available for connecting a higher-powered amplifier; it can also be used to connect 1 or 2 powered subwoofers for added low frequency performance.

The MA352 is packed with numerous McIntosh technologies including:

• Their patented Power Guard® technology that monitors the output signal for over driving and makes real time micro adjustments to the input signal to prevent harsh sounding clipping that could potentially damage your speakers
• Fuse-less short-circuit protection circuit Sentry Monitor™ that will disengage the output stage before current exceeds safe operating levels and then resets automatically when operating conditions return to normal
• McIntosh Monogrammed Heatsinks™ which are connected to advanced high current output transistors that minimize thermal equilibrium lag (or warm-up) time
• High Drive headphone amplifier with Headphone Crossfeed Director (HXD®)
• A 5-band analog tone control allows for manual adjustment of your favorite recordings (each band adjustable by ± 12dB)
• Home Theater Pass Through lets it be seamlessly integrated into a home theater system
• Power Control to send power on/off signals to connected McIntosh components for easy system power up and shutdown
• Data Ports to send remote control commands to connected source components

The unit sits on a stainless steel chassis polished to a mirror finish; vintage McIntosh-styled die cast aluminum name badges are affixed to each side. Blue output meters, control knobs, an illuminated logo, and a black glass front panel with direct LED backlighting complete the unit. It can be paired with an assortment of CD players, turntables, tuners, media streamers and speakers to complete your home audio system. 

Specifications:

• Power Output per Channel:  200 Watts into 8 Ohms,  320 Watts into 4 Ohms
• Number of Channels:  2
• Speaker Impedance:  4 or 8 Ohms
• Rated Power Band:  20Hz to 20kHz
• Total Harmonic Distortion:  0.03%
• Dynamic Headroom:  1.5dB
• Frequency Response +0,-0.5dB:  20Hz to 20kHz
• Frequency Response, +0, -3dB:  10Hz to 100kHz
• Sensitivity Phono (Moving Coil):  N/A
• Sensitivity Phono (Moving Magnet):  2.5mV
• Sensitivity High Level (Balanced / Unbalanced):  0.5V/0.25V
• Sensitivity (Power Amp input):  N/A
• Signal To Noise Ratio (Moving Coil):  N/A
• Signal To Noise Ratio (Moving Magnet):  82dB
• Signal To Noise Ratio (High Level):  93dB
• Signal To Noise Ratio (Power Amp input):  N/A
• Input Impedance (Balanced / Unbalanced):  20K/20K
• Damping Factor:  8 Ohms: >200,   4 Ohms: >100
• Maximum Output (Balanced / Unbalanced):  8V Unbalanced

Connectivity:

• Balanced Input:  2
• Unbalanced Input:  3
• Phono Input Moving Coil:  0
• Phono Input Moving Magnet:  1 (adjustable loading)
• Upgradeable Digital Audio Module:  No
• Digital Coaxial Input:  0
• Digital Optical Input:  0
• Digital MCT (DIN) Input:  0
• Digital USB Input:  0
• HDMI (ARC) Input:  0
• Balanced Variable Output:  0
• Unbalanced Fixed Output:  0
• Unbalanced Variable Output:  1
• Headphone Output:  1/4" High Drive with Headphone Crossfeed Director (HXD®)
• Subwoofer Output:  2
• AM/FM Tuner option:  No
• Home Theater PassThru:  Yes
• Unbalanced Analog Connector Type:  Standard
• Speaker Binding Post Type:  Standard
• Service Port:  1

Digital Audio Specifications:

• Digital-to-Analog Converter (DAC) Type:  N/A
• Digital Coaxial Input Sample Rate:  N/A
• Digital Optical Input Sample Rate:  N/A
• Digital MCT (DIN) Input Sample Rate:  N/A
• Digital USB Input Sample Rate:  N/A

Control:

• Tone Controls:  5-Band
• Tone Bypass and Input Assign:  Yes
• RS232 Control Input:  Yes
• Power Control Output:  1
• Rear Panel Data Port:  2
• Rear Panel IR Sensor Input:  Yes
• Input Level Match:  Yes

General Specifications:

• Vacuum Tube or Solid State:  Preamplifier: Vacuum Tube,  Power Amplifier: Solid State
• Output Type:  Direct Coupled
• Output Meter:  Yes
• Dual Layer Chassis:  Yes
• Chassis Finish:  Polished stainless steel
• McIntosh Monogrammed Heatsinks™:  Yes
• Power Requirement:  120V 50/60Hz, 6.0A
• Standby Power Requirement:  <0.5 Watts
• Dimensions (W x H x D):  17-1/2" (44.5cm) x 9-7/8" (25.1cm) x 20-1/2" (52.1cm)
• Weight:  66 lbs (29.9 kg)