MA8900 2-Channel Integrated Amplifier

Bring all your music to life with the MA8900 Integrated Amplifier. It offers 200 Watts per channel and combines many new features with our legendary amplification prowess and preamplifier capabilities into one all-encompassing unit.

The MA8900 is the first product to feature our new McIntosh Monogrammed Heatsinks™. They are made from high quality materials with excellent thermal conductivity properties and are so efficient at dissipating heat that they warrant bearing the McIntosh “Mc” logo. Besides helping your MA8900 run cool, they’ll also help it look cool thanks to our new finishing process that results in a higher quality appearance. They are connected to advanced high current output transistors that eliminate thermal equilibrium lag time (or warm-up time) so that the first musical note played sounds just as good as songs played later in your listening session.

To keep up with the ever-changing world of digital audio, all the digital inputs are housed in our new DA1 Digital Audio Module. The DA1 Digital Audio Module can be replaced by future modules to easily keep your MA8900 current with all the latest digital audio formats and technologies. The DA1 comes with an upgraded 8-channel, 32-bit Digital-to-Analog Converter (DAC) used in Quad Balanced mode; it has 6 digital inputs consisting of 2 coax, 2 optical, 1 USB and 1 MCT for use with our MCT450 SACD/CD Transport. The coax and optical inputs will decode music up to 24-bit/192kHz for high resolution audio playback; the USB input accepts even higher PCM signals up to 32-bit/384kHz and supports up to DSD256 and DXD 384kHz. Analog stereo inputs include 1 balanced and 6 unbalanced plus 1 each of Moving Coil and Moving Magnet for turntable connectivity. All inputs can be given custom names for user-friendly system control and configuration. Unlike our previous integrated amplifiers, every input now functions independently of each other and all are always available for use regardless of how you connect your sources.

Besides new heatsinks and advanced digital audio capabilities, the MA8900 includes many other updates. Our engineers have used new, more powerful control microprocessors to improve overall system operation. They have also incorporated some of the latest audio-grade circuit components to allow the MA8900 to deliver the best sound possible. ​​​​​​​​​​
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At 200 Watts per channel, the MA8900 has enough power to properly drive virtually all loudspeakers. And the renowned McIntosh Autoformer guarantees your speakers will always receive the full 200 Watts regardless if they have 2, 4 or 8 Ohm impedance. Other McIntosh features included in the MA8900 are:

  • Power Guard® that monitors and adjusts the sound wave at the speed of light to prevent harsh sounding distortion and clipping that could damage your speakers
  • Sentry Monitor™ is our fuse-less short-circuit protection circuit that disengages the output stage before current exceeds safe operating levels and then resets automatically when operating conditions return to normal
  • Home Theater PassThru that allows for seamless integration into a home theater system
  • High Drive headphone amplifier with Headphone Crossfeed Director (HXD®) which can bring an added dimension to headphone listening
  • A discrete, five-band tone control that permits manual analog adjustment of your favorite recordings
  • Power Control to send power on/off signals to connected McIntosh components for easy system power up and shutdown
  • Gold-plated speaker binding posts that prevent corrosion to ensure a quality signal is sent over your speaker cables​ to your speakers

The entire unit is wrapped in the timeless McIntosh aesthetic with blue watt meters, a black glass front panel, control knobs, illuminated logo, aluminum end caps and a beautiful polished stainless steel chassis. Contact your local dealer​ to learn more. ​​

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Electronic Specifications

Power Output per Channel

200 Watts

Number of Channels

2

Speaker Impedance

2, 4, or 8 Ohms

Rated Power Band

20Hz to 20kHz

Total Harmonic Distortion

0.005%

Dynamic Headroom

2dB

Frequency Response +0,-0.5dB

20Hz to 20kHz

Frequency Response, +0, -3dB

10Hz to 100kHz

Sensitivity Phono (Moving Coil)

0.25mV

Sensitivity Phono (Moving Magnet)

2.5mV

Sensitivity High Level (Balanced / Unbalanced)

0.5V/0.25V

Sensitivity (Power Amp)

1.4V

Signal To Noise Ratio (Moving Coil)

80dB

Signal To Noise Ratio (Moving Magnet)

82dB

Signal To Noise Ratio (High Level)

95dB

Signal To Noise Ratio (Power Amp)

113dB

Input Impedance (Balanced / Unbalanced)

20K/20K

Damping Factor

>40

Maximum Output (Balanced / Unbalanced)

8V Unbalanced

Connectivity

Balanced Input

1

Unbalanced Input

6

Phono Input Moving Coil

1 (adjustable loading)

Phono Input Moving Magnet

1 (fixed loading)

Upgradeable Digital Audio Module

Yes

Digital Coaxial Input

2

Digital Optical Input

2

Digital MCT (DIN) Input

1

Digital USB Input

1

Balanced Variable Output

0

Unbalanced Fixed Output

1

Unbalanced Variable Output

2

Headphone Output

1/4" High Drive with Headphone Crossfeed Director (HXD®)

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

8-channel, 32-bit/192kHz PCM/DSD, Quad Balanced

Digital Coaxial Input Sample Rate

24-bit/44.1kHz to 192kHz

Digital Optical Input Sample Rate

24-bit/44.1kHz to 192kHz

Digital MCT (DIN) Input Sample Rate

16-bit/44.1kHz (CD)
DSD64 (SACD)

Digital USB Input Sample Rate

32-bit/44.1kHz to 384kHz (PCM)
DSD64, DSD128, DSD256, DXD352.8kHz, DXD384kHz

Control

Tone Controls

5-Band

Tone Bypass and Input Assign

Yes

RS232 Control Input

Yes

Power Control Output

1 Main, 2 Trigger

Rear Panel Data Port

4

Rear Panel IR Sensor Input

Yes

Input Level Match

Yes

General Specifications

Vacuum Tube or Solid State

Solid State

Output Autoformer

Yes

Output Meters

Yes

Dual Layer Chassis

Yes

Chassis Finish

Polished stainless steel & black painted steel

McIntosh Monogrammed Heatsinks™

Yes

Power Requirement

120V 50/60Hz, 4.4 amps

Standby Power Requirement

<0.25 Watts

Weights & Dimensions

Dimensions (W x H x D)

17-1/2" (44.45cm) x 7-5/8" (19.37cm) x 22" (55.88cm)

Weight

75 lbs (34.1 kg)

Shipping Weight

93 lbs (42.3 kg)

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