MOTU 24 AI

USB 2.0 Audio Interface, AD Converter and Standalone Mixer

  • 72 Channels
  • Supported sample rate: 44.1, 48, 88.2, 96, 176.4, 192 kHz
  • 32-bit floating point format
  • 3 x ADAT in/out
  • Wordclock in/out
  • LCD display
  • Class compliant USB 2.0 connector compatible with USB 3 and iOS
  • Cat-5e Ethernet connector for AVB network (up to 5 MOTU AVB devices can be connected via optional MOTU AVB switch)
  • Integrated DSP with mixing function for 48 channels
  • 12 Stereo buses
  • Modulated analogue equaliser
  • Vintage compression
  • Gate and classic reverb
  • Flexible matrix for routing and splitting
  • Control via web browser
  • For Mac OSX 10.8 or higher
  • Format: 19" / 1 U
  • Includes MOTU AVB Discovery app for iOS, MOTU AVB Control web app, AudioDesk 4.0 (download)

Further Information

Recording / Playback Channels 64x64
Number of Mic Inputs 0
Number of Line Inputs 24
Number of Instrument Inputs 0
Number of Line Outs 0
Headphone Outs 0
Phantom power No
Number of S/PDIF Connectors 0
Number of ADAT Connectors 3
Numer of AES/EBU Connectors 0
Number of MADI Connectors 0
Ethernet 1
Other Connectors No
MIDI interface No
Word Clock 1xIn, 1xOut
Max. sample rate (kHz) 192 kHz
Max. resolution in bit 24 bit
USB Bus-Powered No
Incl. power supply Yes
USB Version 2.0
Width in mm 483 mm
Depth in mm 0 mm
Height in mm 44 mm
5 Customer Ratings
  • 5
  • 4
  • 3
  • 2
  • 1
4.8 /5
  • handling
  • features
  • sound
  • quality
Total
quality
features
handling
sound
great package but poor cosmetics
16.10.2016
well this is my second AVB unit. I bought an Ultralite AVB a few months back for live recording but needed more mic channels so got the 24AI. Sonically the 24ai is incredible. Far Far better than the RME FF802 for sonics. The drivers on the Motu are rock solid too. I've recorded 6 gigs to 18ch 24/96 onto a Pyramix 9 DAW and nothing but a joy. I use the Ultralite for monitoring when running the 24ai.

So now to the bad points. The build and finish is poor. I would have expected a much higher standard of finish but this thing looked liked it was hand sanded in someones garage. I contacted Motu sales USA and they told me to contact the European distributor - not good service.

I would still recommend it on sound quality alone. 24 pristine line ins at 24/192... come on.
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de Original review (Show translation)
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Total
quality
features
handling
sound
Günstiges Interface für hohe Kanalzahl
R.Exler, 15.11.2017
Ich habe eine untypische Anwendung, trotzdem könnte meine Beurteilung für alle hilfreich sein.

Ich suchte nach einem Analoginterface für messtechnische Zwecke, das ich mit PC verwenden kann. Die Anwendung verlangt >24, ideal bis zu 64 Kanäle, die synchron einzulesen sind (dazu werde ich bald auf 48 Kanäle (2x 24Ai) aufrüsten). Die Vorverstärker dazu sind Eigenbau, Auswertung erfolgt in meiner eigenen Software die auf ASIO zugreift. Die ersten Versuche erfolgten mit 1x 24Ai.

+ Einige Fragen zum Interface bzw. Handbuch konnten vorab mit dem Support von MOTU geklärt werden, der prompt geantwortet hat.
+ Inbetriebnahme und Bedienung generell sehr einfach.
+ Firmwareupdate mit einem Klick erledigt, wenn man das Interface an Ethernet angeschlossen hat.
+ CPU-Last auf meinem Notebook mit i7-3667U (fast 5 Jahre alt) bei 24 Kanälen / 48 kHz immer unter 10 Prozent.
+ Einfacher Anschluss / Verkabeltung vieler Kanäle über die D-Sub Buchsen.
+ Signalqualität der Eingangsverstärker sehr gut. Hält offensichtlich, was MOTU hier verspricht. Genaue Messwerte muss ich erst aufnehmen.
o Etwas mehr Verstärkung an den Eingängen wäre hilfreich. Dann könnte man auch Mikrofone die keine Phantomspeisung benötigen problemlos direkt anschließen.
o Einfache Einstellung aller Eingangsverstärkungen (alle gemeinsam) wäre für meine Anwendung praktisch.
- Schade, dass USB 3 noch nicht unterstützt wird. Da könnte man auch auf PC (Notebook!) problemlos mehr als 2 Interfaces (über AVB untereinander verbunden) anschließen. Momentan ist man mit USB 2 bei 48 kHz auf maximal 64 Kanäle eingeschränkt, bei 96 kHz auf 32 Kanäle.

AVB-taugliche Netzwerkkarten und Treiber sind nach meinem Wissensstand am PC noch sehr wenige verfügbar - in Windows Notebooks praktisch gar nicht.

Den Sound kann ich nicht beurteilen.
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fi Original review (Show translation)
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Erittäin laadukas
bassisti, 19.04.2016
Erittäin hyvät muuntimet, ominaisuudet suhteessa hintaan erittäin hyvät.
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fr Original review (Show translation)
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Parfaite
Simon Nicolas, 12.02.2020
Utilisée en studio avec une 24AO, elles sont parfaites et d'une stabilité à toute épreuve.
Les deux sont simplement reliées entre elles avec un câble ethernet, et sont configurées pour apparaître comme une seule et même interface audio.
Les réglages peuvent être protégés par mot d passe, ce qui est très utile dans mon cas (studio son dans une école).
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