Boss DD-2 Digital Delay Guitar Pedal Schematic Diagram

The DD-2 is one of the best digital delay pedals and actually sounds very analog! The pedal was sold from 1983 and it did officially go out of sale 1986 but it was relaunched without changes as the DD-3 (later versions of the DD-3 use a different design). The circuit is built around the RDD63H101 IC and a 12 bit A/D converter producing a flat freq

uency response between 40Hz and 7kHz. It generates a delay time of 12. 5 to 800 milliseconds and offers a useful sample/hold feature.

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