Nothing to add

UTILIZATION

Easy to use. Is there a manual? Oh.

SOUND QUALITY

Used with a bass. It's effective, it's the least we can say! I do not use it alone. In fact, I put it just before Bass Balls (without its own overdrive): I think the effect is better than the Bass Balls alone because its canned serious distortion unlike the Bass Balls.
If any one is still an effect a bit too much for me: I prefer overdrive.

OVERALL OPINION

Used for a year on some songs. I do not regret my purchase.