Presonus Audio electronic Single-Channel Tube Overview, Features, Dual Servo Gain Stage, Pad/Line

1 OVERVIEW

1.2 FEATURES

The following is a summary of your DigiTUBE’s features:

Dual Servo Gain Stage

Your DigiTUBE contains a dual servo gain stage (no capacitors). This design provides ultra low noise performance and wide dynamic control. The DigiTUBE can boost the desirable signal without increasing unwanted background noise.

Mic/Instrument/Line Input

The DigiTUBE has a Neutrik™ combo (XLR & 1⁄4”) connector. The XLR input can be used for microphone signals and phantom power is available for condenser mics when the 48V switch is engaged. The XLR will also accept line level signals when the PAD/LINE switch is engaged. The 1⁄4” input will accept instrument level signals, only. The PAD/LINE switch has no effect on the 1⁄4” input and it should be understood that the 1⁄4” input is not designed to accept line level signals.

Pad/Line

A switch on the front panel may be used to engage a -20dB pad for mic level signals or change the XLR input operating level from mic to line. Using the - 20dB pad provides a more manageable signal from high output devices giving the operator greater control over the incoming signal and a much reduced chance of over-driving the input, thereby avoiding distortion.

48V

The DigiTUBE has 48V phantom power available. Phantom power assures optimum performance from your condenser microphone without the need of an external power supply. A 80Hz switch is provided on the front panel of the DigiTUBE that enables the user to insert an 80Hz filter. Often referred to as a rumble filter, this feature is useful for eliminating bothersome low-end sounds such as air conditioning noise without greatly altering the desired audio.

Parametric Equalizer

The equalizer section is equipped with three dual concentric potentiometers The outer control selects the frequency and the inner control boosts/cuts the selected frequency. The EQ controls are LOW, MID, HI from left to right. The bandwidths are broad enough and have enough overlap to allow a very effective contour of the incoming audio signal.

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