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The High Frequency control has as range of +/- 12dB. The two ranges
are selected with the High Shift switch. 6KHz is great for adding top
end to guitars, snare drums and vocals. Cutting 6KHz can also help to
“take the edge off” brittle or harsh sounding instruments. 18KHz may
be used to add “sizzle” to cymbals and is generally referred to as the
“air” band. While there aren’t very many instruments that contain
18KHz information directly, many instruments and mixes contain
upper harmonics, which can add extra definition and “space” when
boosted. Cutting at 18KHz can decrease hiss and noise.
High Shift Switch
The High Shift switch selects the corner frequency of the High
Frequency control. In the “out” position the corner is 18KHz. In the
“in” position the corner is 6KHz.Note: The High Frequency and Hi-
Mid Frequency controls overlap. This feature gives you the ultimate in
flexibility. For example, on cymbals try boosting 18KHz with the High
control while cutting 20KHz with the Hi-Mid control for a very bright,
yet noise--free result.
EQ Bypass Switch
A Bypass switch is included in the equalizer circuit to enable you to
remove it from the signal chain. When set to its “in” (bypass) position,
signal is allowed to pass from the compressor circuitry to the output
jacks with no equalization. The LED will glow red when Bypass is
engaged. This informs you that the equalizer is bypassed. In its “out”
position, the equalizer is active. Use the EQ Bypass switch when
setting the Tube Channel’s output level to achieve unity (no boost or
cut) gain through the equalizer circuit. Unity gain is achieved when
the active level is the same as the bypassed level.
Master Output Level Control
The Master Output level control sets the output level of the Tube
Channel. When the control is fully counterclockwise, there is no
output. Turning the control clockwise increases the level of the output
to a maximum of +10dB of gain. When setting the Output Level
control, refer to the VU Output Level meter or the level meter on your
recorder or mixer.
Phase Switch
The Phase switch is provided to reverse the phase of signal leaving the
