ISP Technologies THETA PRE AMP PEDAL - Manual (Page 8)

DISTORT CIRCUIT
DISTORT ON LED
This led located above the DISTORT FOOTSWITCH and indicates when the DISTORT
Circuit is active and in the signal path.
GAIN 1 / GAIN 2 CONTROLS
This control adjusts the amount of gain in the DISTORT CHANNEL. The maximum
amount of gain will be determined by the setting of the Active GAIN control selected
by the GAIN FOOTSWITCH. The GAIN can be adjusted from approximately 10db to
over 100db and if the PREAMP is switched ON and active with the DISTORT circuit the
total maximum GAIN can approach 160db and WILL require proper setting of the
Decimator Noise reduction to use this amount of GAIN. Most players will use GAIN 1
for a low level GAIN setting and GAIN 2 for high GAIN.
BASS
This control adjusts the amount of boost or cut in the low frequency portion of the
spectrum of PREAMP. The available BASS boost and cut range is +/-15 decibels.
Note: the Bass control is flat when the control is centered at 12:00.
MIDRANGE BOOST/CUT CONTROL
This control works in conjunction with the SWEEP frequency control. The MID and
SWEEP controls work together to provide a semi-parametric tone control. When the
MID control is set at 12:00 straight up there is no boost or cut in the MID frequency
portion of the spectrum. The graph below shows the response of the MID boost/cut
and SWEEP controls. The MID control allows +/- 12db of boost or cut to be applied
at the frequency determined by the SWEEP control.