The A/D and D/A converters and the S/PDIF I/O are all 24-bit, working at either 44.1 or
48 kHz sampling rates, and the microphone preamplifiers were designed by Focusrite to
provide the best quality possible at this price.
The Front Panel
*insert FigAD_20_TheOriginalMbox.jpg*
Figure D.20 The Original Mbox (No Longer Manufactured).
Looking at the front panel, there are two knobs with associated switches and LED
indicators to let you select among the mic, line, and instrument inputs and control the
input levels of these. Below these, third from the top, you will find a knob labeled “Mix”
that lets you monitor whatever is plugged into the Mbox’s inputs, or the playback of any
audio tracks in Pro Tools, or a blend or mix of these, as described later. Finally, at the
bottom of the front panel, there is a 1/8-in. “mini” headphone jack with an associated
volume knob and mono button.
The Back Panel
*insert FigAD_21-MboxBackPanel.tif*
Figure D.21 Mbox Back Panel.
At the top-left of the back panel, there is a standard 1/4-in. headphone jack. To the right
of this, there is a USB port with a 48-V phantom power switch above it. Underneath the
USB port, there is a pair of RCA/phono connectors for S/PDIF input and output. The line
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