Buy on a website used equipment, specifications were enticing. In addition for 30 € with shipping there was not much risk.

Except that it is absolutely and totally unusable unreactive live to agree quickly. On a 7-string expected nothing from it.

I replaced it with a korg pedal tuner is the day and night.
It serves me today for my rack lighting effect, the only thing he can do. Nine for the price there are much better, and if you used a tuner was basic to 30 € will be better.
So to flee.