Audio I/O 1U Manual
Front Panel (Audio I/O 1U)
Controls
A. LINE IN GAIN (L) knob - Adjusts the level of the signal coming into the modular via
either the 7U Case’s left ¼” input jack or the Audio I/O Jack 1U module’s left ¼” input
jack.
This knob has up to 20 dB of gain, which allows you to patch in low consumer level
signals and boost them. 0 dB = 10V p-p (nominal Eurorack level).
B. LINE IN GAIN (R) knob - Adjusts the level of the signal coming into the modular via
either the 7U Case’s right ¼” input jack or the Audio I/O Jack 1U module’s right ¼” input
jack.
This knob has up to 20 dB of gain, which allows you to patch in low consumer level
signals and boost them. 0 dB = 10V p-p (nominal Eurorack level).
C. LINE OUT GAIN (L+R) knob - Adjusts the level of the signal going out of the modular
via either the 7U Case’s left/right ¼” output jacks or the Audio I/O Jack 1U module’s
left/right ¼” output jack.
This knob steps a nominal Eurorack level (10V p-p) down to +4 dBu (with the knob
roughly at 12:00), but allows for up to +6 dB of gain.
D. INPUT VU LEDs - This pair of LEDs monitors the signal level coming into the modular
from an external source. The green LED lights around 300mV rms, and indicates the
presence of a healthy signal. The red LED indicates that the signal is clipping the input
and comes on at 9V peak (6.2V rms) with a 1kHz sine). If the red light comes on, you
need to back off on your input levels.
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