I would like to know if it is possible to stop all those light when the pedal is off. I really like this effect, but its eat me to much battery because of those lights.
Anyone know a solution ??

I've been using the same battery for close to 8 months. zvex pedals as a rule are super low drain. How long are yours lasting? Plus the lights are on to show you the current tempo.

the ooh wah 2 will be released soon which always starts on the first filter which i guess means that the flashing lights will stop in bypass mode and just the first light will be on. not sure tho. ask zach on his forum. he always responds very quick.

I saw a Video of Scott Henderson and his Ooh Wah didn't light on when the effect was off. Anyway, I asked Zachary and He responds very quichly to me. A mod is possible but it is expensive. For the moment I will try to find another solution, like put a Ac/adaptator in the effect.

Thanks for your help.