The MX123 A/V Processor marries a long tradition of uncompromising McIntosh sound quality with the latest home theater technologies to bring you an unsurpassed luxury home entertainment experience. It is compatible with all the leading home theater surround sound and object-based 3D audio formats including Dolby® Atmos (including Dolby Atmos Height Virtualizer), DTS:X® Pro, Auro-3D®, along with Sony's 360 Reality Audio, an immersive audio experience utilizing Sony’s spatial sound technology. It’s also fully compatible with modern 4K Ultra HD video sources and can upscale lower resolutions to 4K Ultra HD for the best possible picture quality.

The MX123 features upgraded digital audio processing capabilities that results in 2 more discrete audio channels, bringing the MX123 to 13.2 discrete audio channels compared to 11.2 in the previous model. These 13.2 discrete channels are available via both balanced and unbalanced audio outputs that can be used in a variety of home theater speaker configurations; 2 additional unbalanced outputs offer further connection flexibility. DSD and ALAC playback support have been doubled to DSD128 and ALAC 192kHz for better high resolution audio performance.

For the video needs of your home theater, the MX123 has 7 HDMI inputs and 3 HDMI outputs, with each being HDCP 2.2/2.3 compliant. They all also have 18Gbps of bandwidth to support High Dynamic Range (HDR) formats Dolby Vision™, HDR10 and HLG; 4K Ultra HD at 50/60Hz; 4:4:4 color spacing; Rec. 2020; and 3D video pass-through. Enhanced Audio Return Channel (eARC) functionality is included on 1 of the HDMI outputs. eARC offers improved bandwidth so the MX123 can receive higher resolution audio from your TV to produce the best possible sound quality.

CONNECTIVITY

• Multi-Channel Outputs Balanced

  13.2

• Multi-Channel Inputs Unbalanced

  7.1

• Multi-Channel Outputs Unbalanced

  15.2

• Stereo Inputs Balanced

  1

• Stereo Inputs Unbalanced

  8
  (including 1 Moving Magnet Phono)

• Stereo Outputs Unbalanced

  2

• Digital Coaxial Input

  2

• Digital Coaxial Output

  0

• Digital Optical Input

  2

• AES/EBU Balanced Input

  0

• HDMI Input

  7
  HDCP 2.2/2.3, High Dynamic Range (Dolby Vision, HDR10 and HLG), 4K Ultra HD at 50/60Hz, 4:4:4 color, Rec. 2020, 3D video pass-through

• HDMI Output

  3
  HDCP 2.2/2.3, High Dynamic Range (Dolby Vision, HDR10 and HLG), 4K Ultra HD at 50/60Hz, 4:4:4 color, Rec. 2020, 3D video pass-through, (1) eARC

• HDBT Output

  0

• USB

  1 Type A

• Component Input

  3

• Component Output

  1

• Composite Input

  4

• Composite Output

  2

• Subwoofer 2 Output

  Yes
  (discrete signal from subwoofer 1)

• Network Connection

  1

• Max # of audio channels in Zone A

  15

• Additional Zone Outputs

  Zone 2: HDMI audio/video, component video, composite video, analog stereo audio
  Zone 3: Analog stereo audio

• Advanced Connections

  Ethernet Web interface and firmware update, IP-based control, Web Data Streaming, Apple AirPlay 2, Bluetooth, Spotify Connect

PROCESSING

• Total Harmonic Distortion (DSP Bypass)

  0.005%

• Dolby Processing

  Atmos/True HD/Digital Plus&EX/Pro Logic IIz, IIx

• DTS Processing

  DTS:X/Virtual:X/HD Master & High Res. Audio/ES/96/24, Discrete & Matrix6.1/Neo:6/Express/Neural-X

• Auro Processing

  Auro 3D, Auro-Matic, Auro 9.1, 10.1

• Pure Stereo DSP Bypass Mode

  Yes

• Video Scaling

  4K Upconversion

• High Dynamic Range (HDR)

  Dolby Vision, HDR10 and HLG

CONTROL

• Third Party Control

  RS232, Web IP, IR Input

• Tone Controls

  9 Band Equalizer, Bass and Treble

• OSD Overlay on HDMI Output

  Yes

• Input-Output Format Indicators

  9 in and 9 out

• Control of McIntosh Sources

  Yes, by handheld remote, 1 Data Out, 2 Power Control Trigger jacks

GENERAL SPECIFICATIONS

• Channel Formats

  13.2, 7.1, 5.1, Stereo

• DSP Room Correction

  Audyssey MultEQ XT32, Dynamic EQ / Dynamic Volume, DSX

• Microphone and stand included

  Yes

• Network Features

  Wi-Fi dual band 2.4/5GHz, Apple AirPlay 2, Bluetooth, Spotify Connect

• Unique Crossover Frequency, Each Speaker

  Yes

• Special Features

  IMAX Enhanced, Rear Panel USB-Apple Dock, HDMI in standby, Apple AirPlay 2, Bluetooth, Spotify Connect

WEIGHTS & DIMENSIONS

• Dimensions (W x H x D)

  17-1/2" (44.45cm) x 7-5/8" (19.37cm) (including feet) x 19-1/2" (49.53cm) (including front panel, knobs, rear panel connections and USB drive)

• Weight

  31 lbs (14 kg)

• Shipping Weight

  55 lbs (25 kg)