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Digi 001 Quick Start Guide 64
Setting Digi 001 Input Levels
Digi 001 input levels for analog inputs 1 and 2 are adjusted using the gain knobs on the
Digi 001 I/O Box for each channel. Input levels for analog inputs 3–8 are software-
adjustable to accommodate a variety of equipment output levels.
The key to setting input levels is to get a signal as “loud” as possible without creating digital
clipping. Signals that get close to the top of the meter in Pro Tools LE use more of the full
bit range (the 16 or 24 bits that make up each audio sample). The more you maximize this
bit range, the better your sound quality. And, by keeping your levels healthy, you'll get the
least possible noise and best distortion performance.
But watch out for digital clipping. Clipping occurs when you feed a signal to an audio
device that is louder than the circuitry can accept. The result is distortion. Digital clipping
is harsh, and usually not something you want to hear at all, so watch those meters!
✽ For best signal-to-noise performance, set the Digi 001 input gain to +4 dBu
when recording devices that provide this output level.
To adjust gain on the Digi 001 (Mic/Line inputs 1–2):
1
Connect the instrument or microphone to the input.
2
If the microphone requires phantom power, apply phantom power now by pressing the
48V switch.
3
Create an Auxiliary Input track by choosing File > New Track.
4
Set the track input to the correct Digi 001 input channel (Mic/Line 1 or 2).
5
Play the instrument or sound source at the volume you will record.
6
Adjust the input gain for the channel using the gain knob on the front of the Digi 001
I/O Box. Increase or decrease gain until you are able to achieve maximum signal level
without clipping. Typically such levels are in the yellow area of the track’s meter.
increasing gain