67 Black Duo

Activate or deactivate the high frequency boost:

• Y → brighter and punchier sound
• N → softer and warmer sound

Control the high frequencies:

• Low → soft tone
• High → bright and punchy

Controls the mid frequencies:

• Low → scooped, more open sound
• High → full and defined body

Control the low frequencies:

• Low → tighter and more defined
• High → fuller and fuller, be careful not to mix

Controls the preamp level:

• Low → clean
• High → light crunch / natural overdrive

Final volume control:

• Negative → attenuation 0 d
• B → neutral level
• Positive → final signal boost Does not alter the timbre, only the overall level.

Sync vibrato to preset tempo:

• Y → synced to
• BPMN → free, adjusted in Hz

Vibrato speed (cycles per second):

• 0.5–1 Hz → slow and smooth
• 1–3 Hz → classic and natural
• 3–6 Hz → fast and pulsating
• If
• Sync
• ON → Speed ​​automatically adapts to the preset tempo.

Vibrato depth:

• Low → light effect
• High → strong and pulsating effect

Turn the built-in vibrato on or off:

• Y → effect on
• N → effect off
• Useful for adding expressive movement without external pedals.