DD-20

Boss DD-20 GigaDelay

The Boss DD-20 has been obsolesced by

• DD-500

Controls

• Knob 1 - "E. Level":
• Knob 2 - "F. Back":
• Knob 3 - "Tone":
• Knob 4 - "Mode":
  • Sound on Sound (SOS)
  • Twist
  • Warp
  • Tape Delay
  • Analog Delay
  • Standard Delay
  • Dual Delay
  • Pan Delay
  • Smooth Delay
  • Modulate Delay
  • Reverse Delay

• Knob 5 - "Delay Time":
• Button 1 - "Tap":
• Button 1 - "Tempo":
• Button 1 - "Write":
• Button 1 - "Select":
• Footswitch 1 - "On/Off":
• Footswitch 2 - "Select":

Inputs and Outputs

• Input A
• Input B
• Control Pedal input
• Headphones Out
• Output A
• Output B
• AC Adapter input

General Information

https://www.boss.info/us/products/dd-20/ http://www.bossarea.com/boss-dd-20-digital-giga-delay/

It's interesting to note that for 40 years Boss has successful pedals with broad "flap"-style footswitches. Dunlop/MXR, Digitech/DOD and the legions of boutique and home builders have put Boss on the defensive and now Boss has returned to their CE-1 era button-style footswitches.

Phase Inversion

No schematic means that we're unable to determine, without an oscilloscope, if the DD-20 inverts the signal phase. That said, the schematic is probably so complicated that it would be almost impossible for the lay person to be able to trace and determine whether this pedal inverts. Once we get it up on a bench with an oscilloscope, we'll report here if the phase is inverted.

Pedal Manual

https://static.roland.com/assets/media/pdf/DD-20_OM.pdf

Schematic

None available.

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Additional Sources