The rule for PHB is you have to work with whatever you have on hand. I’m out of 3PDTs, so I dug one out of a build that needs troubleshooting. I didn’t have the right taper for the MIX knob, I used a C25K instead.
Note the 5 white washers.
I breadboarded this a while back and got weird with it. I find this circuit really interesting. I like almost anything envelope controlled.
I did a FEEDBACK mod with momentary switch, the “clean” mod, and then made the internal LED switchable
. That one does have an effect, but I don’t think it’s anything I can’t get with the DEPTH and TRACKING knobs.
A lot of the inspiration came from this post in the Modifications sub-forum:
Here's the FEEDBACK mod. The only thing I added in addition to that was a SPST switch.
For the "clean" mod, I added a switch between PIN 1 and PIN 8 of the LM386.
This thing is cool- I find it inspiring and a lot of fun. I could see putting it on a small board for the right kind of jam session.
In the demo, I have a 57 centered on a 5w monoprice amp.
Note the 5 white washers.

I breadboarded this a while back and got weird with it. I find this circuit really interesting. I like almost anything envelope controlled.
I did a FEEDBACK mod with momentary switch, the “clean” mod, and then made the internal LED switchable

A lot of the inspiration came from this post in the Modifications sub-forum:
Mo(not)onous Delay
This was a fun project to delve into. I certainly didn’t stay true to the short delay, tape warble aesthetic. The delay still does that sound but now it can run wild too. Very versatile now for rockabilly, dub, shoegaze etc.
Delay time is extended and feedback added to extend beyond a single repeat.
The trimmer sets the threshold for runaway repeats to taste.
I borrowed the blend from Midfi’s Pitch Pirate so there are more sounds available here.
If you have runaway repeats happening and dial the blend close to dry it almost sounds like a scratchy record under...
This was a fun project to delve into. I certainly didn’t stay true to the short delay, tape warble aesthetic. The delay still does that sound but now it can run wild too. Very versatile now for rockabilly, dub, shoegaze etc.
Delay time is extended and feedback added to extend beyond a single repeat.
The trimmer sets the threshold for runaway repeats to taste.
I borrowed the blend from Midfi’s Pitch Pirate so there are more sounds available here.
If you have runaway repeats happening and dial the blend close to dry it almost sounds like a scratchy record under...
- Morbidpale
- Replies: 3
- Forum: Modifications
Here's the FEEDBACK mod. The only thing I added in addition to that was a SPST switch.

For the "clean" mod, I added a switch between PIN 1 and PIN 8 of the LM386.

This thing is cool- I find it inspiring and a lot of fun. I could see putting it on a small board for the right kind of jam session.


In the demo, I have a 57 centered on a 5w monoprice amp.
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