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Anthem MRX 1140 8K with exceptional power, multi-channel resolution, plus with the latest HDMI v2.1 8K flexibility, makes it a true reference-grade home cinema amp.


Support upto 15.2 Pre-Amplifier / 11 Amplifier Channel, with Dolby Atmos, DTS:X and IMAX Enhanced. 140-watts per channel continuous power into 8 ohms. Includes ARC (Anthem Room Correction).


Standing at the top of the impressive Anthem MRX range, the MRX 1140 8K features high-end electronic components for reference-grade sound. Using a high quality, Class AB amplifier with toroidal power supply and discrete components (Class D for Atmos channels), the MRX 1140 8K delivers an effortlessly powerful and dynamic sound. Class-leading room calibration system, ARC Genesis, marks the Anthem out from the opposition. A wide range of streaming music options makes this generation of Anthem AV amps ideal as your complete movies and music hub.


Equipped with an upgraded, 2.1 HDMI interface, the MRX 1140 8K now supports 8K TV and 4K/120Hz gaming. It's also compatible with a wide range of High Dynamic Range video formats. These include Dolby Vision, HDR and HLG. It also supports eARC (enhanced Audio Return Channel), the latest Audio Return Channel system that transmits uncompressed surround sound signals, including Dolby Atmos and DTS:X, from your compatible TV & Projector, back to the amp.


A partnership between IMAX, DTS and award-winning Hollywood sound mixers delivers a stunning new sound format – IMAX Enhanced. Only the highest quality home cinema equipment meets the standard, with IMAX enhanced content available on HDR streaming and UHD Blu-ray disc.

Anthem MRX1140 8K 11.2 Channel AV Receiver


Power and Processing

11 Channel Amplifier

5 Channels Rated at 140 watts (Class AB)

6 Channels Rated at 60 watts (Class D)



  • Maximum Output (<0.1% THD) - 5.2 VRMS, 7.1VRMS
  • Frequency Response - 20Hz - 30KHz +/-0.2dB
  • Frequency Response, Analog-Direct - N/A
  • THD+N (2 Vrms output) - -100 dB
  • S/N Ratio (2 Vrms output, IEC-A filter) - 110 dB

Preamplifier + Amplifier (1 W Output)

  • SNR: 91 dB ch 1-5, 86dB others

Speaker Impedance

  • Compatible with 4 Ohms or higher impedance.

Maximum Continuous Output (1% Thd)

  • Channels 1-5, Two Driven into 8 Ohms - 140 W
  • Channels 1-5, Two Driven into 6 Ohms - 170 W
  • Remaining Channels, Two Driven into 8 Ohms - 60 W
  • Remaining Channels, Two Driven into 6 Ohms - 75 W

Power Consumption

  • Typical Load - 570 W
  • Standby - 0.3 W
  • Standby IP Control Enabled - 1.8 W
  • Standby HDMI Bypass Enabled - 4.9 W


  • Height (without feet) - 6" (15.24 cm)
  • Height with Rackmount Kit - 4U
  • Width - 17" (43.18 cm)
  • Depth (including wifi ant not power cord) - 14-1/2" (36.4 cm)
  • Weight - 33.6 lb (12.8 kg)
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