ART Pro Audio TubeOpto 8 - Eight Ch. Mic Preamp with ADAT - Manual (Page 6)

+48V Switches
These switches provide phantom power to each set of four XLR inputs. Use phantom power only when the
microphone you are using requires it. Doing so will extend the life of the Tubeopto 8
™ as well as reduce the
possibility of a shock hazard.
Phase Switch
This switch selects the output phase of each channel. There is a 180-degree phase inversion through the
channel when the switch is lit.
Low Cut Switch
This switch inserts an 80Hz 6dB/Oct. Low-Cut filter into the signal path. The filter is designed to remove
rumble, pops, and wind noise, yet still sound natural.
LED Meter
The four-segment LED meter indicates the signal level at the input of the A/D converter. In addition to
monitoring the A/D level, the CLIP LED monitors all of the gain stages within the preamp channel for clipping.
Output Control
The output control provides gain or attenuation to adjust to a variety of system operating levels. This control
sets the level sent to the A/D converter.
Sample Rate/Sync Switch
This switch cycles through all of the various sample rates available to the Tubeopto 8™. Holding the switch
down will go to the next available setting.
FIGURE 2 – Sample Rate Section
3