Vintage fuzz box

There’s really not much to tell you about this. I found the schematic in a facebook group I think and stored it away. I wanted to try a vintage fuzz box circuit and checked the datasheet of the transistors used. They can be easily replaced by 2n3904s and so I built this really easy pedal. I left out the on off and passthrough switches to save on parts.

It has 3.5mm  input and output jacks and one pot that effectively is a output volume pot
The schematic with description of the circuit

How could I improve it? Wow first of all I could ‘ve built it the way it was intended to have a passthrough switch. The jacksockets are on the wrong side, usually pedals have the input on the right side and output on the left. These and other than improvements are easy to do.

Honestly I wasn’t sure what to expect from the circuit so I didn’t want to use up too many components. But it sounds okay.