ART Pro Audio Pro Channel - Mic Preamp/Compressor/EQ - Manual (Page 22)

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Special Effects
For industrial, metal, or just “flavor” textures, experiment with the Pro Channel.
Overdriving the preamp, compressor, and equalizer circuitry can add interesting textures
when blended with vocals and other instruments. Purposely placing signals out of phase
can also yield interesting results. No harm will come to the Pro Channel with this type
of experimentation. However, be sure to have output and monitoring levels turned
DOWN before “testing” the sound. Remember, you have a great amount of gain
available in the Pro Channel!
Grounding
Avoiding ground loops while several pieces of equipment are connected is one of the
most common challenges in recording. For this reason, all ART recording gear does not
have a direct connection between the audio circuit ground and the chassis ground. This
technique enables the gear to be safely grounded through the 3-prong AC cord and also
to the previous and next items in the signal chain—with optimum noise performance.
At least one ground connection must be made between the Pro Channel and the rest of
the signal chain. If you hear hum when using the Pro Channel’s XLR output, try
pressing the XLR GND switch in, to its “Lift” position, to disconnect the ground wire
(pin 1) from the XLR output.
Tube Replacement
The Tubes in your Pro Channel should last for many years. They are hand-sorted for
optimal performance in our specific circuits. In the event that you need to replace them,
A R T suggests that you do so with tubes available from A R T. These are matched to
the Pro Channel and will yield consistent sonic results. You can replace the tubes with
other brands, however A R T has no responsibility for the resulting sound quality; they
may sound better, they may sound worse. The choice is yours. Unauthorized alterations
to the Pro Channel also will result in voiding the warranty.
A R T retains a policy of constant product improvement. A R T reserves the right to
make changes in design or make additions to or improvements upon this product
without any obligation, and to install the same on products previously manufactured. In
other words, specifications are subject to change without notice.