Overdrive is to say not too straight forward.
Like all BOSS is not a true bypass, but I heard no sound altration when the pedals are class without an effect is triggered.

UTILIZATION

Simple.
Sturdy is the Boss.

SOUND QUALITY

I made some modifications on it: I changed a silicon diode clipping of a FET (the hottest), I have a TL072 storage piles on the first PDO (more gain) and I changed the condo of a higher value (more serious).
It's better, the sound is more EHJV, more gain and a higher sound lev.
We can say also that it is less dry, it loses its nasal winning cot particularly serious.

Any takers, the change is simple for those who can weld.

OVERALL OPINION

Without pedals is a nice mod with the mod is a good trs pedals.