Presonus Audio electronic Single-Channel Tube user manual Controls & Operation, Gain

CONTROLS & OPERATION 2

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!

MORE	Gain
	This control is used to determine the amount that a

24signal 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

3	48	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!

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