GNI BSH Bass Shaper

BSH Bass Shaper

GNI's Bass Shaper is a sophisticated bass pedal. It brings together many of the main resources a bass player might need; Buffer, Overdrive / Super Noise Gate, Pre-Amp / EQ, Boost, Headphone Amplifier, XLR Balanced Output.

Balanced (XLR) Output

This is the best output for professional direct recording.


CLN. / EFF. Switch


CLN (clean) position: The unprocessed clean sound, regardless of any effects turned on.
EFF (effect) position: The processed sound, reproducing the all effects that are turned on at the time.



EXTRA Switch


CG. position: In "Common Ground" mode, balanced output shares the same electrical grounding with the pedal. This is the most common position.
GL. position: "Ground Lift" is recommended when your pedal and the equipment receiving its signal through balanced output use incompatible grounding loops. In this scenario, separating "grounds" might help reduce noise.
Headphone position: Only amplifies the signal at the main "OUT" jack. The balanced output signal is not changed, however, it forces "ground lift" mode.

Pre-Amp

Pre amplifier prepares the sound to be directly recorded from the pedal. It's BSH's biggest module.


Controls


BASS, MID and TREBLE knobs: Equalization of the respective frequencies.
LEVEL knob: Preamp's output level, which is also the input signal to BSH's booster . If high levels are combined with high booster gain, some distortion might happen.
SHAPE button: This changes the overall characteristic of the sound. It acts mostly on mid frequencies, causing some compression. To turn the preamp on and off, press both footswitches (F1 and F2) at the same time. Preamp has a specific LED in the main panel. "Shape" has another LED which will be on whenever the button is pressed. However, that shape will only act when the preamp module is on. Some people will set the preamp and then leave it on 100% of the time. Other people will use the preamp as an effect over the original bass sound, using it only as needed. Both forms of use are correct.

Overdrive / Super Overdrive

This module adjusts the desired distortion of the pedal.


Controls


DRIVE and LEVEL knobs: Intensity of the distortion, and its output level.
SUPER button: Makes the distortion more intense and aggressive. The "overdrive" effect becomes a "Super Overdrive". This button has its own LED which stays green in "NORMAL" mode, and becomes red when button is pressed ("SUPER" mode).
GATE button: BSH's noise gate. It works this way:
1) When there is signal coming through, gate's LED stays on and nothing special happens.
2) As signal begins to fade, the LED becomes weaker until it shuts down. This is the moment when the noise gate is acting, eliminating most background noise. Please, note that the noise gate only acts when the OVERDRIVE module is turned on. You turn the drive module on and off by pressing the respective "DRIVE" footswitch (F2). Drive requires the preamp to be turned on. Fortunately, BSH handles that by automatically turning the preamp on and off.

Booster Module

This is BSH's simplest module. It's an active gain stage that instantly increases sound's level. The Booster is entirely independent, so it can be turned on anytime pressing the "BOOST" footswitch (F1). "Boost" knob is the only adjustable control on this module. Use it to set booster's gain from 0 (no effect) to 12 decibels. At high settings, booster may cause distortion. If it happens, try to find a better balance lowering levels on the preamp and drive modules. If those are high, then booster might receive a strong input signal, and finally saturate when trying to add even more gain.








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