MOTU UltraLite AVB 18 x 18 USB Audio Interface

BH #MAAVBAI18 • MFR #8451
MOTU UltraLite AVB 18 x 18 USB Audio Interface
Key Features
  • 2 Mic Inputs
  • 2 Guitar Inputs
  • 6 Line Inputs
  • 8 Line Outputs
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The UltraLite AVB 18 x 18 from MOTU is a USB 2.0 audio interface that records at up to 24-bit, 192 kHz resolution, and features DSP mixing, Wi-Fi control and AVB audio networking. It is ideal for a multitude of audio recording applications for your mobile, project or home studio.
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MOTU UltraLite AVB Overview

  • 1Description
  • 2Universal Connectivity
  • 3DSP-Powered Mixing
  • 4Web App Control
  • 5Included Software

The UltraLite AVB 18 x 18 from MOTU is a USB 2.0 audio interface that records at up to 24-bit, 192 kHz resolution, and features DSP mixing, Wi-Fi control and AVB audio networking. It is ideal for a multitude of audio recording applications for your mobile, project or home studio.

The UltraLite AVB 18 x 18 boasts 2 mic inputs, 2 guitar inputs, 6 line inputs, 8 line outputs, headphone out and 8-channel optical I/O for a total of 18 inputs and 18 outputs, simultaneously. The optical ports also support stereo TOSLink (optical S/PDIF). The unit also features a large backlit 128 x 48 pixel LCD screen that lets you view all signal activity at a glance with detailed metering for all analog and digital I/O. Access to hardware settings are available from a simple and convenient menu, and quick setup templates are available for many common use cases.

By connecting a Wi-Fi router directly with a standard Ethernet cable, you can control the UltraLite AVB's mixing and DSP effects from your smartphone or tablet, without a computer. This is especially handy for mixing live sound. For more I/O, the system can be expanded by daisy-chaining a second MOTU interface via Ethernet cable, and for even more, up to five MOTU interfaces can be linked using a MOTU AVB Switch (sold separately).

Universal Connectivity

The UltraLite AVB connects to your computer with audio class compliant hi-speed USB 2.0 (compatible with USB 3.0 and iOS) for across-the-board compatibility now and in the future. Alternately, if you have a Mac running OS X Yosemite (10.10) or later, you can use a standard Ethernet cable for operation as an audio interface. Either way, the UltraLite AVB is compatible with all audio software

DSP-Powered Mixing

Console-style mixing with 48 channels and 12 busses. Each channel features modeled analog EQ and compression and uses 32-bit float precision processing. The UltraLite AVB models classic British EQs and also provides a classic compressor with peak/RMS operation on each input channel. Groups and the Main Mix bus are equipped with MOTU's Leveler, a model of the legendary Teletronix LA-2A optical leveling amplifier, known for its sought-after Automatic Gain Control (AGC) characteristics

Web App Control

The software that you use to control the UltraLite doesn't reside on your hard drive. It's a web app served from the hardware itself. This means you can control the UltraLite's on-board DSP, mixing, device settings, and network audio routing from the web app software running in your favorite web browser on a laptop, tablet or smartphone connected by wire or Wi-Fi to your local area network. Use any web client on Mac, Windows, Linux, iOS or Android, as long as it shares the same network

Included Software

  • MOTU AVB Discovery App for Mac (finds connected MOTU interfaces)
  • MOTU AVB Discovery App for iOS (available from Apple App Store)
  • MOTU AVB Control web app (served from the hardware itself)
  • AudioDesk 4.0 for Mac & Windows (separate download)


UPC: 839128005983

MOTU UltraLite AVB Specs

Form FactorTabletop (Rack-Mountable with Included Hardware)
Display1 x LCD
Channels of I/O18 Input / 18 Output at 44.1/48 kHz
14 Input / 14 Output at 88.2/96 kHz
10 Input / 10 Output at 176.4/192 kHz
Max Sample Rate/Resolution192 kHz / 24-Bit
Number of Mic Preamps2
Analog Audio I/O2 x 1/4" TRS Hi-Z Input (Front Panel)
6 x 1/4" TRS Balanced/Unbalanced Line Input (Tip Hot)
2 x XLR 3-Pin Balanced Mic Input (Pin 2 Hot)
8 x 1/4" TRS Balanced Line Output (DC-Coupled)
1 x 1/4" TRS Headphone Output (Front Panel)
Phantom Power+48 V (on 2 Channels)
Digital Audio I/O1 x TOSLINK Optical ADAT / S/PDIF Input
1 x TOSLINK Optical ADAT / S/PDIF Output
Host Connection / USB1 x USB Type-B (Class-Compliant USB 2.0)
Network I/O1 x RJ45 AVB / Ethernet
MIDI I/O1 x DIN 5-Pin Input
1 x DIN 5-Pin Output
Gain/Trim RangeLine Outputs:
-4 dB to +20 dB (in 1 dB Steps)
Line Inputs:
-96 dB to +22 dBu (in 1 dB Steps)
Mic Inputs:
56 dB (in 1 dB Steps)
Headphone Outputs:
128 dB
Line/Hi-Z Inputs:
-96 dB to +22 dBu
Max Input LevelLine/Hi-Z Inputs:
+24 dBu (Balanced, Unbalanced)
Line Inputs:
+24 dBu
Mic Inputs:
+24 dBu (with Pad)
Max Output LevelLine Outputs:
+20 dBu
Headphone Output Power80 mW (Max)
Dynamic RangeLine Outputs:
117 dBA
Line Inputs:
110 dBA
Mic Inputs:
112 dBA
Headphone Outputs:
112 dBA
THD+NLine Outputs:
-101 dB
Line Inputs:
-102 dB
Mic Inputs:
-104 dB
Headphone Outputs:
-94 dB
Digital Audio
Sample Rates44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz
OS CompatibilitymacOS 10.8 or Later (macOS Yosemite Required for AVB)
Windows 7 or Later
Supported Drivers/API & Plug-InsCore Audio (Mac)
Processor Requirement1 GHz Intel
RAM Requirements2 GB, 4 GB Recommended
Storage Requirements500 GB
Required HardwareAvailable USB 2.0 Port or USB 3.0 / 3.1 Gen 1 Port
Available AVB/TSN Ethernet Port or Ethernet Port
AC/DC Power Adapter12 to 18 VDC at 1.0 A, Center-Positive or Negative
Rackmount Size1 RU (with Included Hardware)
Packaging Info
Package Weight5 lb
Box Dimensions (LxWxH)14.9 x 11.6 x 5.4"
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Browsing History


Does the UltraLite AVB feature an auto-on jumper, like the UltraLite mk4?
Asked by: Anonymous
No, the UltraLite AVB does not have an auto-on jumper like the UltraLite-mk4. Thank you for your question.
Answered by: Mike B. MOTU Expert
Date published: 2018-08-26


Is the MOTU UltraLite AVB 18 x 18 compatible with Persons Studio One Professional?
Asked by: Anonymous
You probably meant PRESONUS (not PERSONS). I don't have that software. The AVB device has ASIO and WAV drivers, and is USB compliant on a MAC (meaning no drivers needed). The Presonus manual should tell you if it is compatible with those standards. Maybe someone who has that software will reply, too.
Answered by: Stephen S.
Date published: 2018-08-26
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