MOTU Audio Express User's Guide download pdf (Page 10)

ABOUT THE AUDIO EXPRESS

10

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Coaxial S/PDIF in/out

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MIDI IN and MIDI OUT connectors

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1394 FireWire A connector

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High-speed USB 2.0 connector

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Foot pedal input

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DC power jack

6 inputs and 6 outputs

All Audio Express inputs and outputs can be used

simultaneously, for a total of 6 inputs and 6

outputs:

All inputs and outputs are discrete and can be

active simultaneously.

The headphone outputs can operate as an

independent output pair, or they can mirror any

other Audio Express output pair, such as the main

outs.

Mic/guitar inputs with preamps

The two mic/instrument inputs are equipped with

preamps and “combo” XLR/TRS jacks, which

accept XLR microphone inputs or quarter-inch

guitar/instruments inputs. Individual 48 volt

phantom power and a 20 dB pad can be supplied

independently to each mic input. The Precision

Digital Trim™ knobs on the front panel for each

mic/instrument input provide 60 dB of boost for

the XLR mic input and 22 dB of boost for the TRS

instrument input in approximately 1 dB

increments.

Analog

The quarter-inch analog inputs are equipped with

24-bit 96 kHz A/D converters. The analog outputs

have 24-bit 96 kHz D/A converters. All audio is

carried to the computer in a 24-bit data stream.

All quarter-inch analog outputs and inputs are on

balanced TRS +4dB jacks. All of these jacks can

also accept unbalanced plugs.

Precision Digital Trim™

All of the Audio Express’s analog inputs are

equipped with digitally controlled analog trims

that allow adjustments in approximately 1 dB

increments. The mic/guitar input trims can be

adjusted using front-panel digital rotary encoders

with 60 dB of adjustment for the mic input and 22

dB for the TRS input. All analog inputs, including

the rear-panel TRS analog inputs, can be trimmed

using the Audio Express’s included CueMix FX

control software for Mac and Windows. This allows

you to ﬁne-tune trim settings for synths, effects

modules and a wide variety of analog inputs for

optimum levels. Different trim conﬁgurations can

then be saved as ﬁles on disk for instant recall.

S/PDIF

The Audio Express rear panel provides coaxial

S/PDIF input and output.

MIDI I/O

The Audio Express’s standard MIDI IN and MIDI

OUT jacks supply 16 channels of MIDI I/O to and

from the computer via the Audio Express’s

FireWire or USB connection.

Pedal input

The quarter-inch foot pedal jack accepts a standard

foot switch. When you push the foot switch, the

Audio Express triggers a programmable keystroke

on the computer keyboard. For example, with

MOTU’s Digital Performer audio sequencer

software, the foot switch triggers the 3 key on the

numeric keypad, which toggles recording in

Connection Input Output

Analog 24-bit 96 kHz on bal/unbal TRS 2 4

Mic preamps 24-bit 96 kHz on XLR/TRS combo 2 -

SPDIF 24-bit 96kHz digital 2 2

Total 6 6

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 81 82

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