T says it all!
Several amendments are proposed: I have a personal TL072, I put the two modes of cliping (diffrent diodes) and bass boost.

UTILIZATION

A simple config with the modifications it fits many guitars, amps and situations

SOUND QUALITY

Both of my config: telecaster lite ash + Blues Junior or half body Ibanez + BJ
in both cases is obtained from trs good sound: from blues to rock see rock trs bridge pickup with the lite ash

the bass boost and a rel more to give more consistency to her, the choice of diodes for saturation and trs well.

OVERALL OPINION

I use it for the past 1.5 years etj'en trs'm happy. I damaged the original OP Amp (JRC 4558) and I put what I had on hand (a TL072). In my opinion your exact rock is much (more gain) but I notice when I complterai recommends JRC.

This is a good DIY pedals on the report quality unbeatable price with the added bonus of allowing mods to understand how to work as an OD (and a soldering iron!)

I tried a TS9 course (and overpriced), I find that the sound is at least as Russian and more we have a little more room to tweak.