User Manual

1248 Front Panel

1. MAIN OUT volume control. This setting, along with all

front panel settings, can also be adjusted from the

MOTU AVB Control web app.

2. MONITOR OUT volume control.

3. PHONE OUTPUTS with volume control.

4. GUITAR INPUTS with volume control. These are high-

impedance guitar inputs that provide authentic guitar

amp volume response and feel.

5. MIC INPUT preamp gain, switchable 48V phantom

power, and optional -20 dB pad switches for each mic

input. The Precision Digital Trim™ knob provides 63 dB

of preamp gain. Turn the knob to see the gain adjust-

ments on a large-scale, horizontal meter.

6. ANALOG INPUT METERS for the four mic inputs, two

guitar inputs, and eight balanced (TRS) quarter-inch

inputs on the rear panel.

7. ANALOG OUTPUT METERS for the eight balanced (TRS)

quarter-inch outputs, main outs, and monitor outs.

8. S/PDIF DIGITAL METERS (stereo input and output).

9. ADAT OPTICAL METERS. At 1x sample rates (44.1 or 48

kHz), there are sixteen channels of input and output. At

2x (88.2 or 96 kHz), there are eight channels.

10. The CLOCK section displays the current operating

sample rate and clock mode (source) for the unit.

11. POWER SWITCH: Thunderbolt, AVB, and USB are “plug-

and-play” protocols. That means you can turn the 1248

off and back on without restarting your computer.

12. The multi-purpose backlit LCD displays level meters for

all inputs and outputs. It can also show device settings

and network information, using the knobs to the left.

13. Push SELECT to enter the LCD menu. Turn SELECT to

scroll through menu options. Push again to descend

into the submenus, if applicable. To choose the current

setting, push SELECT a third time. Push BACK to return

to the previous menu level, and do so repeatedly to exit

the menu altogether.

14. Push ID to display network settings for the device,

including its IP address.

15. Push TRIM to enter trim mode. In this mode, the LCD

numerically displays gain settings for eight channels at

a time. Use the front panel knobs to adjust each

channel, from left to right, starting with the MAIN

volume knob.

121314

1065431 2 7 8 9 11