I'll admit, this is definatley NOT a mod for everyone, I just happen to think its a great beginner project and you can get some really funky sounds, some even can sound like an octave pedal.
I suggest you check the soundclips before you attempt these mods!
I hate the DS-1 pedal but you know what they say, a wall of noise is the best way to end shows! There are about four different bends, but five are listed. This is because A seems to be exactly the same as E, but it has been listed as two different mods before so there may be a difference. Disassemble the DS-1 so you can easily see the back of the circuit board and continue to step 1.
Step 1: Performing the mod and adding a switch (optional)
If you want to add a switch, solder one wire to the base position and to the middle lug of an spdt switch. Then solder a wire to a point (A-E) and the other end to either the right or left lug of the switch, this way, you can toggle between having the mod on and off incredibly easily!
Step 2: Soundclips
Variation C - Couldn't record a clip, it has a cool fading effect, but didn't hold the notes long enough to make a good recording with my setup