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RockBass Alien Deluxe Acoustic Bass
Pickups: Fishman Sonicore Piezo
Preamp: Fishman ™
1) Low battery indicator
2) Tuner: The preamp also has a built in chromatic tuner. The display shows the note actually played. The red light on the left
side of the display shows when the note is flat, the green light in the middle shows when the note is in tune, the red light on
the right side shows when the note is sharp. When the tuner is activated, the sound is muted. The tuner is in true bypass mode
when deactivated.
3) Volume Control: Controls the overall gain.
4) Bass Control: This is a boost / cut shelving tone control for low frequencies.
5) Middle Control: This is a boost / cut shelving tone control for mid frequencies.
6) Treble Control: This is a boost / cut shelving tone control for high frequencies.
7) Notch Filter: This is a fixed-level, variable-frequency filter for eliminating feedback or unwanted resonance. The Notch Filter is
effectively turned off in the full counterclockwise position.
8) Brilliance Control: This is a resonant-style boost / cut filter that adds presence to the sound.
9) Phase Switch: The Phase Switch compensates for acoustic phase differences that often occur between instrument and
speaker. It can be used as a tone filter at low volume levels or as a feedback filter at high levels. The Phase Switch can
correct any electrical phase difference between the piezo system and an outboard instrument microphone. Flip the Phase
Switch several times and use your ear to find the optimum setting. The best position for the Phase Switch may change
depending on the sound system and/or venue acoustics.
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