top of page

Monitor 8 is a 24 x 16 x 8 monitor mixer, 6-channel headphone amplifier and USB/AVB audio interface with console-style 48-channel mixing and DSP effects. Monitor 8 can mix 24 inputs, multichannel computer audio, and dozens of AVB audio network channels to eight stereo busses: Main, Aux and monitor groups A thru F.

The Monitor 8 can operate as an audio interface for a studio workstation (DAW), as a standalone mixer, or as an auxiliary monitor mixing system in the studio or on stage. The following sections provide a brief overview of its main features and characteristics. State-of-the-art A/D and D/A conversion Monitor 8’s analog section employs state-of-theart 24-bit DACs or ADCs, which deliver analog recording and playback with remarkably high dynamic range at sample rates from 44.1 to 192 kHz. Complementary I/O configurations Monitor 8 delivers an exceptional amount of analog and digital audio I/O. In addition, it is designed to complement MOTU’s other AVBequipped audio interfaces, to deliver a wide range of I/O options.

You can mix and match several interfaces and operate them as a unified I/O and mixing system. The following sections provide a bird’s-eye glance of the I/O configurations offered by each interface in the MOTU AVB family. Each interface provides a variety of analog and digital interconnects, all active simultaneously, designed to provide everything you need for a well equipped recording studio.


Monitor 8

40 simultaneous audio channels (54 connections)


Connection (Input x Output)

Quarter-inch analog on bal/unbal TRS

  • 8 x 10 

XLR main out 

  • 2

Summed mono quarter-inch out 

  • 6

Headphone outs 

  • 12

ADAT optical digital (at 44.1 or 48 kHz)

  • 16 in

Total I/O connections

  • 24 x 30

Total I/O channels (discrete channels)

  • 24 x 16


Network I/O

Monitor 8 is also capable of handling eight 8-channel banks of network audio input and output for an additional 64 channels of simultaneous audio I/O.

Other MOTU AVB interfaces

The Monitor 8 is part of a larger family of audio interfaces, summarized below, with complementary I/O configurations.

MOTU Monitor 8 Monitor Mixer, Headphone amp and USB2/AVB Audio Interface


Technical Specifications

Sample rates 44.1, 48, 88.2, 96, 176.4, 192 kHz
Analog inputs 8 x 1/4" TRS line inputs (balanced/unbalanced) 
Max level: +24 dbU (digitally adjustable -96 to +22 dB) 
Trim: -96 to +22 dB (digitally adjustable)
Analog outputs 10 x 1/4" TRS line out (balanced, DC coupled) 
6 x 1/4" TS line out (summed mono) 
2 x XLR line out (pin 2 hot) 
Max level: +22 dBu 
Trim: 127 to 0 dB (digitally adjustable) 
12 x 1/4" TRS stereo headphone
Digital Input 2 banks (16 ch) of ADAT optical input at 1x rates 
1 bank (8 ch) of SMUX optical input at 2x rates 
Stereo TOSLink (optical S/PDIF) on Bank A (optional)
Total I/O connections 24 inputs and 30 outputs (54 total) at 1x rates 
16 inputs and 30 outputs (46 total) at 2x rates 
8 inputs and 30 outputs (38 total) at 4x rates
Total I/O channels 24 inputs and 16 outputs (40 total) at 1x sample rates 
16 inputs and 16 outputs (32 total) at 2x sample rates 
8 inputs and 16 outputs (24 total) at 4x sample rates
Computer I/O 1 x USB 2.0 audio class compliant 
      USB 3.0 and iOS compatible 
1 x AVB Ethernet (requires OS X Yosemite)
Computer I/O channels USB 2.0 (44.1 to 48 kHz): 64 in/out 
USB 2.0 (88.2 to 96 kHz): 32 in/out 
USB 2.0 (176.4 to 192 kHz): 24 in/out 
AVB Ethernet: 16 to 128 in/out, depending on 
      host computer speed
Headphone 12 x 1/4" TRS stereo phone (mirrored in 6 pairs)
Network I/O 1 x RJ45 AVB/TSN Ethernet (1 Gbps)
AVB streams
(8 channels per stream)
8 in / 8 out @ 44.1 or 48 kHz 
8 in / 8out @ 88.2 or 96 kHz 
8 in / 8 out @ 176.4 or 192 kHz
Front panel 6 x 1/4" TRS headphone output 
1 x digital rotary encoder • main out volume 
1 x digital rotary encoder • aux out volume 
6 x digital rotary encoders • phone volume 
324 x 24 pixel LCD for level meters / menu nav 
1 x AC power switch
Power International 100-240V autoswitching supply 
50-60 Hz • 0.5A max
and weight
(width x depth x height, enclosure only) 
19 x 7 x 1.75 inches 
48.3 x 17.75 x 4.5 cm 
5.1 lbs / 2.31 kg 
with rack brackets removed: 
17.25 inches (43.8 cm) wide 
5.0 lbs / 2.27 kg


Mac System Requirements

  • 1 GHz Intel-based Mac or faster
  • 2 GB RAM; 4 GB or more recommended
  • Mac OS X version 10.8 or later
  • Available high-speed USB 2.0 or AVB Ethernet port*
  • A large hard drive (at least 500 GB for recording)
  • *AVB Ethernet audio interface operation requires OS X Yosemite

Windows System Requirements

  • 1 GHz Pentium-based PC compatible or faster
  • 2 GB RAM; 4 GB or more recommended
  • Windows 7, 8 or 10
  • Available USB 2.0 or 3.0 port
  • Available Ethernet port for firmware updates
  • A large hard drive (at least 500 GB for recording)

Web App Support

  • Any web client platform: Mac, Windows, Linux, iOS, Android
  • Any web browser: Safari, Firefox, Chrome, Opera, Explorer, etc.
  • Web client must be connected to the same network as the MOTU AVB interface by wire or Wi-Fi.

Included Software

  • Thunderbolt and USB 2.0 drivers
  • MOTU Discovery App for Mac & PC (finds connected MOTU interfaces)
  • MOTU Discovery App for iOS (available from Apple App Store)
  • MOTU Pro Audio Control web app (served from the hardware itself)
  • MOTU Audio Tools (FFT, oscilloscope, X-Y plot, phase analyzer)
  • AudioDesk 4.0 for Mac & PC (separate download)

Operating Systems

  • For computer audio I/O: Mac OS X 10.8 or later; Windows 7 or later
  • For web app control: Mac, Windows, Linux, iOS, Android


bottom of page