User`s manual

3) Preserve Source: Bass O Treble o

This, as you’ve probably guessed, is the reverse of No. 2. With the

Treble button pressed, the source mic’s bass characteristics are

neutralized while the treble characteristics are allowed through

unchanged. Then, at the model end, only the model’s bass characteris-

tics are applied to the signal. The net effect is that you get the source

mic’s treble characteristics and the modeled mic’s bass characteristics

4) Preserve Source: Bass o Treble o

With both buttons pressed, both the source’s bass and treble charac-

teristics are allowed through unchanged and no model is applied to

either range. This is equivalent to selecting Bypass in both the Source

Mic and Modeled Mic menus, with the exception that the Proximity

controls for both the source and modeled mics remain active.

Tube Saturation

The Tube Saturation section is designed to model the distortion that

is typical of a high-quality tube pre-amp.

When tube pre-amps are operated in their linear range, there is

virtually no signal distortion and their audio qualities are essentially

identical to solid state pre-amps. However, it commonly occurs that

transients exceed the linear voltage range, resulting in distortion.

The distortion characteristics of a vacuum tube pre-amp are vastly

different from that of solid state amplifiers and are often described

as adding a certain “warmth” to a sound (in contrast to what is

often described as the “brittleness” of the solid state sound).

The amount of tube saturation effect applied to your audio is

controlled by the Tube Saturation Drive control in combination with

the Input Gain control.

The Drive control determines the amplification factor of the mod-

eled tube pre-amp with the numeric display indicating the amplifi-

cation in dB. At 0 dB , no distortion occurs, even for full amplitude

(+1 or -1) signal levels. These levels represent the “rails” of the

amplifier. As the Drive is increased, the amplification is increased.

Any regions of the signal that increase beyond the rails generate

distortion. (But instead of the usual ugly digital clipping, they are

distorted the same way the tube pre-amp would distort the sound.)

Controls: Tube Saturation