Big analog volume pedal. No need for battery or power supply.
Rugged and ultra comfortable, it is sadly and obviously heavy.
Line in, Line out, Tuner output.

UTILIZATION

What about the use ... it is not easy.
Note the flexibility of mechanics: everything is done smoothly.

SOUND QUALITY

Does not color the sound, from there nothing to say.

OVERALL OPINION

I use it for 2 years.
I love its ease of use, the output on my tuner, no battery, its rock solid.
€ 50 bought second-hand, I clearly made a good deal.
I do not use it a lot, but it is always present in my set of pedals.