PreSonus DigiTUBE - Manual (Page 7)

Gain
This control is used to determine the amount that a
signal being processed by the pre-amplifier is increased
in level at output. Dynamic mics and instruments
without pre-amps may require more gain than con-
denser mics and instruments that have a built-in
pre-amp (care should be taken with instruments having
their own built-in pre-amp not to overdrive the 1⁄4”
input of the DigiTUBE). Line level signals can only be processed through the
XLR input connector with the PAD/LINE switch in the LINE position. Attempt-
ing to use the 1⁄4” input for line level signals exceeds the design parameters of
the DigiTUBE. The 1⁄4” input of the Neutrik™ connector is designed to accept
instrument level signals and attempting to use the 1⁄4” input for line level will
likely yield an unsatisfactory result. Activating the PAD/LINE switch reduces the
incoming signal by 30dB. This is a very useful feature for rapidly reducing the
level coming into the DigiTUBE to prevent the input signal from over-modulat-
ing (distorting). This may occur due to a high output level from a microphone.
Padding the mic input serves to provide increased ‘headroom’ for the operator
and allow greater variance in adjusting the GAIN control. Placing the switch
to the PAD/LINE position allows the XLR connector to accept line level signals.
Line level signals can be used in the XLR input without overdriving the input.
Keyboards and other line level devices can be inserted into the DigiTUBE XLR
input by selecting the LINE position.
Note: the PAD/LINE switch does not affect the 1⁄4” input of the Neutrik™
connector. The 1⁄4” input is designed to accept instrument level signals ONLY!
CONTROLS & OPERATION 2
5
the resulting sound possessing a ‘richer’ and ‘sweeter’ tone. If an overdriven
signal is desired, this can be achieved by significantly raising the level of the
DRIVE control. Overdriving the tube is especially useful for direct electric guitar
sounds. Setting the DRIVE control is a matter of taste; the amount of saturation
needed to achieve a desired result depends upon the resulting sound you want
to hear. Experiment!
24
3 48
MORE