Grombass is the one distortion/drive effect for bass that you will need. It has a wide range of sounds; from slightly boosted to synth- like distortion – always preserving the low ends!
The trick is done by NOT distorting the lowest frequencies. Just the ones above a certain freq. This keeps the punch and power. Do not suffer from the usual lack of bass response in a bass distortion.
Here is an overview over the controls:
Germanium: Lowest amount of distortion, a little dirty/warm in the background
LED: Gives more bass and less treble and most distortion
Silicium: A more trebled and hiss distortion
The switch “Muffler”/”Kvassleik” is a filter that changes the mids and tops. This filter is dependent on the controller «Gear»
“Turbo”/”Hardleik” is the gain on the input.
“Gear”/”Groms” is a tone controller that controls the gain of the lower frequencies.
“Injection”/”Lydmengd” is the output volume.
Besides these controls, there is a potmeter inside to adjust the input level – if you want to use it with an active bass.